The curriculum is divided into the following units: Unit 1 – Geometry Basics. Unit 2 – Logic and Proof. Unit 3 – Parallel and Perpendicular Lines. Unit 4 – Congruent Triangles. Unit 5 – Relationships in Triangles. Unit 6 – Similar Triangles. Unit 7 – Quadrilaterals. Unit 8 – Right Triangles and Trigonometry. Area of Composite Figures Math Lib quiz for 6th grade students. Find other quizzes for Mathematics and more on Quizizz for free! ... 196.5 m 2 196.5\ m^2 1 9 6. 5 m 2 ...Terms in this set (14) Sector. a section of a circle bounded by a central angle and its interperated are. Area of a sector formula. A=x(3.14)r2/360. Composite figures. a figure that can be separated into regions that are basic plane figures. Area of a compsotie figure.Area of plane figures, sectors, composite figures quiz for KG students. Find other quizzes for Mathematics and more on Quizizz for free! View D9A9250B-6F9D-4B82-BD7F-B093EF00A277.jpeg from ALGEBRA 1 ALGEBRA at Corsicana H Igh School. lame: nit 11 - Quiz 1 (areas of plane figures, sectors, and composite figures) Date: Find the area ofWhat is the area of the composite figure? 80 cm2. 16 cm2. 96 cm2. 32 cm2. 5. Multiple-choice.6th grade 11 units · 148 skills. Unit 1 Ratios. Unit 2 Arithmetic with rational numbers. Unit 3 Rates and percentages. Unit 4 Exponents and order of operations. Unit 5 Negative numbers. Unit 6 Variables & expressions. Unit 7 Equations & inequalities. Unit 8 Plane figures. 6th grade 11 units · 148 skills. Unit 1 Ratios. Unit 2 Arithmetic with rational numbers. Unit 3 Rates and percentages. Unit 4 Exponents and order of operations. Unit 5 Negative numbers. Unit 6 Variables & expressions. Unit 7 Equations & inequalities. Unit 8 Plane figures.Solved Name Gaudat me Per Date: Quiz 11-1: Area of Plane. Name Gaudat me Per Date: Quiz 11-1: Area of Plane Figures, Sectors, and Composite Figures Find Work on the task that is interesting to youWhat is the area of the composite figure? 80 cm2. 16 cm2. 96 cm2. 32 cm2. 5. Multiple-choice.c 1 The shape shown is a sector. Write the formula for finding the area of a sector. c A = θ 360° × πr2 2 Write the value of θ and r. θ = 40°, r = 15 3 Substitute and evaluate the expression, correct to 2 decimal places. A = 40° 360° ×π 152 = 78.54 cm2 Areas of composite figures • A composite figure is a figure made up of a ...Area of Composite Figures Math Lib quiz for 6th grade students. Find other quizzes for Mathematics and more on Quizizz for free! ... 196.5 m 2 196.5\ m^2 1 9 6. 5 m 2 ...Part 1 of How to find the area of composite figures, figures within figures, or the area of several figures together. How to find the area of a shaded area w...Section 1.4: Perimeter and Area in the Coordinate Plane. ... Section 11.1: Circumference and Arc Length ... Section 11.3: Areas of Polygons and Composite Figures ...Terms in this set (14) Sector. a section of a circle bounded by a central angle and its interperated are. Area of a sector formula. A=x(3.14)r2/360. Composite figures. a figure that can be separated into regions that are basic plane figures. Area of a compsotie figure.Quiz - 11.3 Areas of Polygons and Composite Figures ... Find the area of the composite figure. 40. 9. 49. 61. 8. Multiple-choice. 5 minutes. 1 pt. 40 yd. 40 yd 2. 80 ... Terms in this set (14) Sector. a section of a circle bounded by a central angle and its interperated are. Area of a sector formula. A=x(3.14)r2/360. Composite figures. a figure that can be separated into regions that are basic plane figures. Area of a compsotie figure.Jan 12, 2023 · Verified answer. Jonathan and his sister Jennifer have a combined age of 48. If Jonathan is twice as old as his sister, how old is Jennifer. star. 4.8 /5. heart. 4. On a coordinate plane, the x-axis is labeled white flowers and the y-axis is labeled Pink flowers. Point A is (2, 6), point B is (12, 18), point C is. Solved Name Gaudat me Per Date: Quiz 11-1: Area of Plane. Name Gaudat me Per Date: Quiz 11-1: Area of Plane Figures, Sectors, and Composite Figures Find Work on the task that is interesting to you 6th grade 11 units · 148 skills. Unit 1 Ratios. Unit 2 Arithmetic with rational numbers. Unit 3 Rates and percentages. Unit 4 Exponents and order of operations. Unit 5 Negative numbers. Unit 6 Variables & expressions. Unit 7 Equations & inequalities. Unit 8 Plane figures. Sep 27, 2014 · AREA OF TRIANGLE: A = bh 2 A = 12 3 2 A = 36 = 18 cm2 2. AREA OF COMPOSITE FIGURES • Now you try again to find the area of the following composite figure. This figure can be separated into a square & a rectangle. Now we just find the area of each figure. 9 cm 6 cm 3 cm 12 cm AREA OF SQUARE: A = side side A = 3 3 A = 9 cm2 AREA OF RECTANGLE: A ... A segment from the center of a regular polygon to a vertex, forms the hypotenuse to the right triangle. (Also the radius of the circumscribed circle).Benefits of Area and Perimeter Word Problems Worksheets Grade 7. When it comes to composite figures, finding the area and perimeter can prove to be confusing. By solving the problems available in the area and perimeter worksheets grade 7, students get the opportunity to practice these sums and master the topic.Terms in this set (14) Sector. a section of a circle bounded by a central angle and its interperated are. Area of a sector formula. A=x(3.14)r2/360. Composite figures. a figure that can be separated into regions that are basic plane figures. Area of a compsotie figure.The Basics and Background Information. • A polygon is a simple, closed plane figure with sides that are line segments. • The perimeter of a polygon is the distance around the figure. • The area of any composite figure is based upon knowing how to find the area of the composite parts such as triangles and rectangles. Sector. A section of a circle bounded by a central angle and its intercepted arc. (Think of a slice of pizza.) Area of a Sector. A = x/360 · (∏r²), where x is the degrees in the angle and r is the radius of the circle. Composite Figures. A figure that can be separated into regions that are basic plane figures (like triangles, parallelograms ...Preview this quiz on Quizizz. Perimeter and Area of Plane Figures (w/Tri.) quiz for 4th grade students. Find other quizzes for Mathematics and more on Quizizz for free!6th grade 11 units · 148 skills. Unit 1 Ratios. Unit 2 Arithmetic with rational numbers. Unit 3 Rates and percentages. Unit 4 Exponents and order of operations. Unit 5 Negative numbers. Unit 6 Variables & expressions. Unit 7 Equations & inequalities. Unit 8 Plane figures.May 2, 2013 · HW 1 Sample. posted Apr 10, 2013, 7:35 PM by Unknown user. This is an example of a student's dichotomous key (certainly not the only way to complete this!) | Attachments: HW 1 Example.pdf HW 1 Sample.pdf. 1-6 of 6. Chapter 11 Areas of Plane Figures. Chapter 11 Areas of Plane Figures. Understand what is meant by the area of a polygon. Know and use the formulas for the areas of plane figures. Work geometric probability problems. 11-1: Area of Rectangles. Objectives Learn and apply the area formula for a square and a rectangle. 2.73k views • 145 slidesArea of Compound Shapes - Adding Regions Worksheets These Area Worksheets will produce problems for finding the area of compound shapes that are comprised of adding regions of simple figures. You can select the types of figures used and the units of measurement. These worksheet are a great resources for the 5th, 6th Grade, 7th Grade, and 8th Grade.Preview this quiz on Quizizz. Perimeter and Area of Plane Figures (w/Tri.) quiz for 4th grade students. Find other quizzes for Mathematics and more on Quizizz for free! The curriculum is divided into the following units: Unit 1 – Geometry Basics. Unit 2 – Logic and Proof. Unit 3 – Parallel and Perpendicular Lines. Unit 4 – Congruent Triangles. Unit 5 – Relationships in Triangles. Unit 6 – Similar Triangles. Unit 7 – Quadrilaterals. Unit 8 – Right Triangles and Trigonometry. Prime or Composite Group sort. by Smithcp1. Composite area 1 Labelled diagram. by Jenniferholt1. G7 Math. Figures of Speech Group sort. by Ustadhahaneen. G4 English Figure of Speech Reading. prime and composite game Maze chase.Area of plane figures, sectors, composite figures quiz for KG students. Find other quizzes for Mathematics and more on Quizizz for free!Unit 11: Volume & Surface Area Homework 3: Area of Composite Figures find the area of each 9 unit 11 homework 1 area of plane figures answer key is. Always on Time If you're looking for a punctual person, you can always count on me.Part 1 of How to find the area of composite figures, figures within figures, or the area of several figures together. How to find the area of a shaded area w... Preview this quiz on Quizizz. Perimeter and Area of Plane Figures (w/Tri.) quiz for 4th grade students. Find other quizzes for Mathematics and more on Quizizz for free! 6th grade 11 units · 148 skills. Unit 1 Ratios. Unit 2 Arithmetic with rational numbers. Unit 3 Rates and percentages. Unit 4 Exponents and order of operations. Unit 5 Negative numbers. Unit 6 Variables & expressions. Unit 7 Equations & inequalities. Unit 8 Plane figures.By the following steps mentioned below, we can calculate the area of the composite shapes. Step 1: Break the compound shape into basic shapes. Step 2: Find the area of each and every basic shape. Step 3: Add all the areas of basic shapes together. Step 4: Represent the answer in square units.Quiz 11-1: Area of Plane Figures, Sectors, and Composite Figures. Find the area of each figure. Round to the hundredths place when necessary. 1.combine to determine the area of the composite plane figure. (8.10 I) Subdivide a plane figure into triangles, rectangles, squares, trapezoids, Objectives parallelograms, and semicircles. Use the attributes of the subdivisions. to determine the perimeter of the composite plane figure. (8.10 II)Step-by-step explanation: To find the area of a triangle, you take the base and multiply by the height, and then divide by 2. Hence giving me the answers I obtained in #4 and #10. A square is equal on all sides, so you would just square the measurement of the one side. To find the area of a circle, you would do pi times the radius^2.Section 11-3: Areas of Circles and Sectors. Section 11-4: Areas of Regular Polygons and Composite Figures. Section 11-5: Areas of Similar Figures. Page 139: Skills ...Course: Geometry 218-221 > Unit 1. Quiz 2. Quiz 2 Plane figures. Math Content >. 6th grade 11 units · 148 skills. Unit 1 Ratios. Unit 2 Arithmetic with rational numbers. Unit 3 Rates and percentages. Unit 4 Exponents and order of operations. Unit 5 Negative numbers. Unit 6 Variables & expressions. Unit 7 Equations & inequalities. Unit 8 Plane figures. Perimeter and Area in the Coordinate Plane. ... Section 11.1: Circumference and Arc Length ... Areas of Polygons. Section 11.4: Three-Dimensional Figures. Page 624: Quiz.Verified answer. Quiz 11-1: Area of plane figures, sectors, and composite figures Unit 11 Volume and surface area.Quiz - 11.3 Areas of Polygons and Composite Figures ... Find the area of the composite figure. 40. 9. 49. 61. 8. Multiple-choice. 5 minutes. 1 pt. 40 yd. 40 yd 2. 80 ... 1.6 Two-Dimensional Figures 11.3 Areas of Circles and Sectors Quiz 11.1 Areas of Parallelograms and Triangles 11.2 Areas of Trapezoids, Rhombi and Kites 11.4 Areas of Regular Polygons 11.4 Area Composite Figures Quiz 11.5 Area of Similar Figures 1.7, 12.1 Three-Dimensional Figures 12.8 Congruent and Similar Solids Net Project Quiz 11-1: Area Of Plane Figures, Sectors, And Composite Figures Find ... Unit 6, 6b grammar, past simple (affirmative): A cor. Results 17 - 28 of 28 — Unit 4 congruent triangles homework 3 isosceles equilateral triangles answer key. net Grade 6 module 1 unit 1, lesson 4 answer key grade 6 module 1 unit 1, lesson 4 answer key page 1/7.Learn ...Area of semicircle = 1 2 ××π2 2 =6.283185307 m 2 Total area =32 6 283185307 38 283185307+= m .. 2 =38.3 m 2 (to 3 significant figures) Example 4 The diagram shows a piece of card in the shape of a parallelogram, that has had a circular hole cut in it. Calculate the area of the shaded part. 11 cm 4 cm 6 cm Solution Area of parallelogram =11 6 ... Topic 3: Area of Composite Figures Find the area of each figure. Round to the nearest hundredths when necessary. 9. 10. 11. Find the area of the shaded region. 16 m 16 m 7 m 9 m 16.9 ft 11.9 ft Topic 4: Volume & Surface Area of 3D Figures Find the volume and surface area of each figure. Round to the hundredths when necessary. Figure Volume ...Welcome to Finding the Area of a Composite Figure with Mr. J! Need help with how to find the area of composite rectangles? You're in the right place!Whether ...Perimeter and Area in the Coordinate Plane. ... Section 11.1: Circumference and Arc Length ... Areas of Polygons. Section 11.4: Three-Dimensional Figures. Page 624: Quiz.About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...Moved Permanently. Redirecting to /Browse/Search:unit+11+volume+and+surface+area+homework+1+area+of+plane+figures/Price-Range/FreeThere can be many ways to do composite figures, and your way is just as valid since you divide it into known shapes especially since the area of trapezoids is the first in this string of videos. For fun, I might start with a large 10 by 9 rectangle and take away the three triangles that are cut off from the corner 90 - 3.5 - 13.5 - 12.25 = 60.75.Terms in this set (14) Sector. a section of a circle bounded by a central angle and its interperated are. Area of a sector formula. A=x(3.14)r2/360. Composite figures. a figure that can be separated into regions that are basic plane figures. Area of a compsotie figure. Prime or Composite Group sort. by Smithcp1. Composite area 1 Labelled diagram. by Jenniferholt1. G7 Math. Figures of Speech Group sort. by Ustadhahaneen. G4 English Figure of Speech Reading. prime and composite game Maze chase.A segment from the center of a regular polygon to a vertex, forms the hypotenuse to the right triangle. (Also the radius of the circumscribed circle).Area Calculator. Here is a handy little tool you can use to find the area of plane shapes. Choose the shape, then enter the values. The height h is at right angles to b:4.%Here%is%adiagram%of%the%trackKing’s%is%thinking%of%adding%around%the%new%field.%It% consistsof%twoparallel%linesanda%semicircleateachend.%Thetrack%is10meterswide.% Prime or Composite Group sort. by Smithcp1. Composite area 1 Labelled diagram. by Jenniferholt1. G7 Math. Figures of Speech Group sort. by Ustadhahaneen. G4 English Figure of Speech Reading. prime and composite game Maze chase. Quiz - 11.3 Areas of Polygons and Composite Figures ... Find the area of the composite figure. 40. 9. 49. 61. 8. Multiple-choice. 5 minutes. 1 pt. 40 yd. 40 yd 2. 80 ...Solved Name Gaudat me Per Date: Quiz 11-1: Area of Plane. Name Gaudat me Per Date: Quiz 11-1: Area of Plane Figures, Sectors, and Composite Figures Find Work on the task that is interesting to youMoved Permanently. Redirecting to /Browse/Search:unit+11+volume+and+surface+area+homework+1+area+of+plane+figures/Price-Range/FreeChapter 11 Areas of Plane Figures. Chapter 11 Areas of Plane Figures. Understand what is meant by the area of a polygon. Know and use the formulas for the areas of plane figures. Work geometric probability problems. 11-1: Area of Rectangles. Objectives Learn and apply the area formula for a square and a rectangle. 2.73k views • 145 slides6th grade 11 units · 148 skills. Unit 1 Ratios. Unit 2 Arithmetic with rational numbers. Unit 3 Rates and percentages. Unit 4 Exponents and order of operations. Unit 5 Negative numbers. Unit 6 Variables & expressions. Unit 7 Equations & inequalities. Unit 8 Plane figures.Classifying triangles. Triangle angle sum. The Exterior Angle Theorem. Triangles and congruence. SSS and SAS congruence. ASA and AAS congruence. SSS, SAS, ASA, and AAS congruences combined. Right triangle congruence. Isosceles and equilateral triangles.Mar 8, 2021 · LM = √(4 + 3)² + (1 – 1)²= 7 Area = 6 x 7 = 42 units. 11.2 Areas of Circles and Sectors. Exploration 1. Finding the Area of a Sector of a Circle. Work with a partner: A sector of a circle is the region bounded by two radii of the circle and their intercepted arc. Find the area of each shaded circle or sector of a circle. a. entire circle ... The curriculum is divided into the following units: Unit 1 – Geometry Basics. Unit 2 – Logic and Proof. Unit 3 – Parallel and Perpendicular Lines. Unit 4 – Congruent Triangles. Unit 5 – Relationships in Triangles. Unit 6 – Similar Triangles. Unit 7 – Quadrilaterals. Unit 8 – Right Triangles and Trigonometry. composite figures. a figure that can be separated into regions that are basic plane figures. area of a composite figure. area of region 1 + area of region 2. area of a shaded region. area of entire figure - area of non-shaded region. sector. a section of a circle bounded by a central angle and its intercepted arc. area of a sector.Course: Class 10 math (India) > Unit 11. Lesson 3: Areas of combination of plane figures. Area of a shaded region. Shaded areas. Area of combination of figures. Areas related to circles (basic) Areas related to circles (intermediate) Areas related to circles (advanced) Math >.6th grade 11 units · 148 skills. Unit 1 Ratios. Unit 2 Arithmetic with rational numbers. Unit 3 Rates and percentages. Unit 4 Exponents and order of operations. Unit 5 Negative numbers. Unit 6 Variables & expressions. Unit 7 Equations & inequalities. Unit 8 Plane figures. A. result in efficient allocation of resources. B. none of the given answers is correct. C. clear the market for rice. D. result in a shortage of rice. E. result in a surplus of rice. Verified answer. management. Determine the best crop to plant, using the following decision criteria. What is the area of the composite figure? 80 cm2. 16 cm2. 96 cm2. 32 cm2. 5. Multiple-choice.Area of plane figures, sectors, composite figures quiz for KG students. Find other quizzes for Mathematics and more on Quizizz for free!There can be many ways to do composite figures, and your way is just as valid since you divide it into known shapes especially since the area of trapezoids is the first in this string of videos. For fun, I might start with a large 10 by 9 rectangle and take away the three triangles that are cut off from the corner 90 - 3.5 - 13.5 - 12.25 = 60.75.Classifying triangles. Triangle angle sum. The Exterior Angle Theorem. Triangles and congruence. SSS and SAS congruence. ASA and AAS congruence. SSS, SAS, ASA, and AAS congruences combined. Right triangle congruence. Isosceles and equilateral triangles.By the following steps mentioned below, we can calculate the area of the composite shapes. Step 1: Break the compound shape into basic shapes. Step 2: Find the area of each and every basic shape. Step 3: Add all the areas of basic shapes together. Step 4: Represent the answer in square units.A = 1/2 (B+b)h. Area of Composite Figures. Break into known shapes, find area of the parts of the figure, then add all areas together. Area of a rectangle. A=lw. π. 3.14 or 22/7. Area of a square. A = s^2. Solved Name Gaudat me Per Date: Quiz 11-1: Area of Plane. Name Gaudat me Per Date: Quiz 11-1: Area of Plane Figures, Sectors, and Composite Figures Find Work on the task that is interesting to youGeometry (all content) 17 units · 180 skills. Unit 1 Lines. Unit 2 Angles. Unit 3 Shapes. Unit 4 Triangles. Unit 5 Quadrilaterals. Unit 6 Coordinate plane. Unit 7 Area and perimeter. Unit 8 Volume and surface area.
Course: Class 10 math (India) > Unit 11. Lesson 3: Areas of combination of plane figures. Area of a shaded region. Shaded areas. Area of combination of figures. Areas related to circles (basic) Areas related to circles (intermediate) Areas related to circles (advanced) Math >.. Index.suspected
Preview this quiz on Quizizz. Perimeter and Area of Plane Figures (w/Tri.) quiz for 4th grade students. Find other quizzes for Mathematics and more on Quizizz for free! View 3782BF65-E4F4-438B-866B-CDB5FD630CCA.jpeg from SPANISH 102 at Corsicana H Igh School. Unit 11 - Quiz 1 (areas of plane figures, sectors, and composite figures) Name: Date: In questions 1-3, findthe area if you are decreasing the length of the base by 25%? 11) What is the ratio of the area of triangle A to the area of triangle B if the base of triangle A is 6 feet long and the base of triangle B is 45 inches long and the two triangles have equal heights? 12) A parallelogram has sides measuring 8 and 11 and has an included angle of 45q. AnThis Volume and Surface Area Unit Bundle contains guided notes, homework assignments, two quizzes, a study guide and a unit test that cover the following topics: • Area of Plane Figures (Parallelograms, Rectangles, Squares, Triangles, Trapezoids, Circles) • Area of Sectors of Circles. • Area of Composite Figures (including area of shaded ...Expert Answer 100% (1 rating) Transcribed image text: Name "Gaudat me Per Date: Quiz 11-1: Area of Plane Figures, Sectors, and Composite Figures Find the area of each figure. Round to the hundredths place when necessary. 2.1- 133m² 1.4M 16 in (-)- 163 = 4. A= 21.3 ft 25 cm 5.The Basics and Background Information. • A polygon is a simple, closed plane figure with sides that are line segments. • The perimeter of a polygon is the distance around the figure. • The area of any composite figure is based upon knowing how to find the area of the composite parts such as triangles and rectangles.Grade 6 math (FL B.E.S.T.) 11 units · 149 skills. Unit 1 Arithmetic with rational numbers. Unit 2 Ratios. Unit 3 Rates and percentages. Unit 4 Intro to negative numbers. Unit 5 Arithmetic with negative numbers. Unit 6 Variables and expressions. Unit 7 Equations and inequalities. Unit 8 Plane figures.Apr 21, 2023 · What is the Area of plane figures? Square: Zone = side × side or A = s², where s is the length of one side. Rectangle: Region = length × width or A = lw, where l is the length and w is the width. Triangle: Zone = 1/2 × base × stature or A = 1/2bh, where b is the base and h is the tallness. This is a bundle of 3 hands on activities that support the standard: 3.MD.C.5Understand area as an attribute of plane figures and understand concepts of area measurement. a. A square with side length 1 unit, called “a unit square,” is said to have “one square unit” of area, and can be used to measure area. b.Sector. A section of a circle bounded by a central angle and its intercepted arc. (Think of a slice of pizza.) Area of a Sector. A = x/360 · (∏r²), where x is the degrees in the angle and r is the radius of the circle. Composite Figures. A figure that can be separated into regions that are basic plane figures (like triangles, parallelograms ...Area of plane figures, sectors, composite figures quiz for KG students. Find other quizzes for Mathematics and more on Quizizz for free!View 3782BF65-E4F4-438B-866B-CDB5FD630CCA.jpeg from SPANISH 102 at Corsicana H Igh School. Unit 11 - Quiz 1 (areas of plane figures, sectors, and composite figures) Name: Date: In questions 1-3, findJan 7, 2021 · Step-by-step explanation: To find the area of a triangle, you take the base and multiply by the height, and then divide by 2. Hence giving me the answers I obtained in #4 and #10. A square is equal on all sides, so you would just square the measurement of the one side. To find the area of a circle, you would do pi times the radius^2. Practice with the area of regular polygons. Quiz Answers Area of Composite Figures Warm-Up Get ready for the lesson. Instruction How can areas of composite 2-D figures be found using simple 2-D shapes? Summary Review and connect what you learned. Assignment Practice finding the area of composite 2-D figures. 6th grade 11 units · 148 skills. Unit 1 Ratios. Unit 2 Arithmetic with rational numbers. Unit 3 Rates and percentages. Unit 4 Exponents and order of operations. Unit 5 Negative numbers. Unit 6 Variables & expressions. Unit 7 Equations & inequalities. Unit 8 Plane figures. Jun 27, 2015 · Lesson 45: Composite Plane Figures...Lesson 45: Composite Plane Figures D. Legault, Minnesota Literacy Council, 2014 1 Mathematical Reasoning LESSON 45: Composite Plane Figures Lesson MENSURATION - Amazon S3€¦ · MENSURATION BASIC CONCEPTS: 1.1 PERIMETERS AND AREAS OF PLANE FIGURES: PERIMETER AND AREA The perimeter of a plane figure is the ... There can be many ways to do composite figures, and your way is just as valid since you divide it into known shapes especially since the area of trapezoids is the first in this string of videos. For fun, I might start with a large 10 by 9 rectangle and take away the three triangles that are cut off from the corner 90 - 3.5 - 13.5 - 12.25 = 60.75.Exercise 7.7: Calculate area of sector of a circle. In the diagram below, is the centre of the circle. The radius of the circle is 4.8 cm. Calculate the area of the shaded sector of the circle. Calculate what fraction of the area of the circle is shaded: So, the shaded region is of the area of the whole circle. Area of whole circle:.