find the area of the following polygons class 8

Solution: Question 6. Q. Access all educational video only on Edubull. Triangle Area of the triangle = 1 2 x base x height. Solution: Question 5. (ii) Kavita divided the park into a rectangle and a triangle: The height of the triangle = 30 – 15 = 15 m, Area of the park = (Area of square) + (Area of triangle), Area of Polygon = (Area of triangle AMF) + (Area of trapezium MOEF) +, (Area of triangle DNC) + (Area of trapezium NLBC) +, = (0.5 x AM x MF) + [0.5 x (MF + OE) x OM] + (0.5 x OD x OE) +, (0.5 x DN x NC) + [0.5 x (LB + NC) x NL] + (0.5 x AL x LB), = (0.5 x 20 x 20) + [0.5 x (20 + 60) x (40)] +(0.5 x 30 x 60) +, (0.5 x 40 x 40) +[0.5 x (30 + 40) x (40)] + (0.5 x 10 x 30), = 200 + 1600 + 900 + 800 + 1400 +150 = 5050 cm2, As it is a regular Hexagon so all sides are 13 cm and AN = BQ. This is the length of one side of the triangle (the … Question 2. Area of Regular Polygons Coloring Activity This is a fun way for students to practice finding the area of a regular polygon given the apothem, a side length, or the radius. Ans. compute the (signed) area. When a shape is drawn on a scaled grid you can find the area by counting the number of grid squares inside the shape. generate link and share the link here. TRY THESE. = (0.5 x AF x BF) + [0.5 x (BF + CG) x (FG)] + (0.5 x GD x CG) + (1/2 x AD x EH). Access answers to RD Sharma Maths Solutions For Class 8 Exercise 20.3 Chapter 20 Mensuration – I (Area of a Trapezium and a Polygon) 1. 20.49 (i)-(ii)]… There is a pentagonal shaped park as shown in Fig. Experience. This will clear students doubts about any question and improve application skills while preparing for board exams. Mathematics NCERT Grade 8, Chapter 3: Understanding Quadrilaterals- Different varieties of curves have already been discussed in earlier classes.Starting with polygons chapter moves to the topic- classification of polygons.. After completing this video learner will understand the concept of Area of Polygons. Find the perimeter of the following figures: Solution: (i) Perimeter of the rectangle = 2(l + b) = 2(8 … ... Find the area of the following regular hexagon. Welcome to Finding the Area of a Composite Figure with Mr. J! The following algorithms are available: find the leftmost, rightmost, topmost and bottommost vertex. You could, for example be using inches, metres, miles, feet etc. In other words, the length of the … So to find the area of a trapezium we need to know the length of the parallel sides and the perpendicular distance between these two parallel sides. When a new service area analysis layer is created, the Polygons class is empty. Find the area of right triangles, other triangles, special quadrilaterals, and polygons by composing into rectangles or decomposing into triangles and other shapes; apply these techniques in the context of solving real-world and mathematical problems. Then going up the other side of the polygon subtracts all the yellow area shown here, because when a side is going up, Y0-Y1 is a negative number. Half the product of the sum of the lengths of parallel sides and the perpendicular distance between them gives the area of trapezium. Know the correct formula. Going down one side of the polygon adds all the grey area shown here. Find the area of the pentagon shown in fig. 20.48, if AD = 10 cm, AG = 8 cm, AH = 6 cm, AF = 5 cm, BF = 5 cm, CG = 7 cm and EH = 3 cm. 4 Plug the values of a and p in the formula and get the area. Learn Insta try to provide online math tutoring for you. (i) Jyoti divided the park into two equal trapeziums: From the figure the park divided into equal trapezium having height 7.5 m and sides 30 m and 15 m, Area of the park = 2 x (Area of a trapezium), = 2 x (0.5 x (sum of parallel sides) x height). (R) (3.MD.7d) Triangle is the polygon with minimum number of sides and an equilateral triangle is a regular polygon because all sides are equal in this. Extra Questions for Class 8 Maths Chapter 11 Mensuration. Students solve the 12 problems, then match their answers on the back in order to color the flip-flops. Coordinate plane word problems: polygons. Play this game to review Geometry. If you have any doubts, please comment below. Class 8 RD Sharma Solutions – Chapter 20 Area Of Trapezium And Polygon- Exercise 20.3, Class 8 RD Sharma Solutions- Chapter 20 Area Of Trapezium And Polygon- Exercise 20.1 | Set 1, Class 8 RD Sharma Solutions - Chapter 20 Area Of Trapezium And Polygon- Exercise 20.1 | Set 2, Class 8 RD Sharma Solutions - Chapter 20 Area Of Trapezium And Polygon- Exercise 20.2 | Set 1, Class 8 RD Sharma Solutions - Chapter 20 Area Of Trapezium And Polygon- Exercise 20.2 | Set 2, Class 9 RD Sharma Solutions - Chapter 18 Surface Area and Volume of a Cuboid and Cube - Exercise 18.1, Class 9 RD Sharma Solutions- Chapter 18 Surface Area and Volume of a Cuboid and Cube - Exercise 18.2 | Set 1, Class 9 RD Sharma Solutions - Chapter 18 Surface Area and Volume of a Cuboid and Cube - Exercise 18.2 | Set 2, Class 9 RD Sharma Solutions - Chapter 19 Surface Area And Volume of a Right Circular Cylinder - Exercise 19.1, Class 8 RD Sharma Solutions - Chapter 22 Mensuration III (Surface Area And Volume Of Right Circular Cylinder) - Exercise 22.1 | Set 1, Class 8 RD Sharma Solutions - Chapter 22 Mensuration III (Surface Area And Volume Of Right Circular Cylinder) - Exercise 22.1 | Set 2, Class 9 RD Sharma Solutions- Chapter 21 Surface Area and Volume of a Sphere - Exercise 21.2 | Set 1, Class 9 RD Sharma Solutions - Chapter 21 Surface Area and Volume of a Sphere - Exercise 21.2 | Set 2, Class 9 RD Sharma Solutions- Chapter 20 Surface Area And Volume of A Right Circular Cone - Exercise 20.1 | Set 1, Class 9 RD Sharma Solutions- Chapter 20 Surface Area And Volume of A Right Circular Cone - Exercise 20.1 | Set 2, Class 9 RD Sharma Solutions- Chapter 21 Surface Area and Volume of a Sphere - Exercise 21.1, Class 9 RD Sharma Solutions- Chapter 20 Surface Area And Volume of A Right Circular Cone - Exercise 20.2, Class 8 RD Sharma Solutions- Chapter 22 Mensuration III (Surface Area And Volume Of Right Circular Cylinder) - Exercise 22.2 | Set 2, Class 8 RD Sharma Solutions- Chapter 22 Mensuration III (Surface Area And Volume Of Right Circular Cylinder) - Exercise 22.2 | Set 1, Class 8 RD Sharma Solutions - Chapter 21 Mensuration II (Volumes and Surface Areas of a Cuboid and a Cube) - Exercise 21.1 | Set 1, Class 8 RD Sharma Solutions - Chapter 21 Mensuration II (Volume and Surface Areas of a Cuboid and a Cube) - Exercise 21.1 | Set 2, Class 8 RD Sharma Solutions- Chapter 21 Mensuration II (Volumes and Surface Areas of a Cuboid and a Cube)- Exercise 21.2 | Set 1, Class 8 RD Sharma Solutions - Chapter 21 Mensuration II (Volumes and Surface Areas of a Cuboid and a Cube) - Exercise- 21.2 | Set 2, Class 8 RD Sharma Solutions- Chapter 21 Mensuration II (Volumes and Surface Areas of a Cuboid and a Cube)- Exercise 21.4 | Set 2, Class 8 RD Sharma Solutions - Chapter 21 Mensuration II (Volumes and Surface Areas of a Cuboid and a Cube)- Exercise 21.4 | Set 1, Data Structures and Algorithms – Self Paced Course, Ad-Free Experience – GeeksforGeeks Premium, We use cookies to ensure you have the best browsing experience on our website. Semi-regular Tessellations. Class: Find the area of the following compound shapes (not drawn to scale). acknowledge that you have read and understood our, GATE CS Original Papers and Official Keys, ISRO CS Original Papers and Official Keys, ISRO CS Syllabus for Scientist/Engineer Exam, Mensuration - Volume of Cube, Cuboid, and Cylinder | Class 8 Maths, Types of Quadrilaterals - Rectangle, Square, Rhombus, Parallelogram | Class 8 Maths, Algebraic Expressions and Identities | Class 8 Maths, Class 8 NCERT Solutions - Chapter 9 Algebraic Expressions and Identities - Exercise 9.5 | Set 1, Representation of Rational Numbers on the Number Line | Class 8 Maths, Area of Trapezium - Mensuration | Class 8 Maths, Class 8 NCERT Solutions - Chapter 11 Mensuration - Exercise 11.3, RD Sharma Class 8 - Chapter 1 Rational Numbers - Exercise 1.1, Class 8 NCERT Solutions - Chapter 11 Mensuration - Exercise 11.4, Class 8 NCERT Solutions - Chapter 11 Mensuration - Exercise 11.2, Class 8 NCERT Solutions - Chapter 11 Mensuration - Exercise 11.1, Mathematical Operations on Algebraic Expressions - Algebraic Expressions and Identities | Class 8 Maths, Class 8 NCERT Solutions - Chapter 10 Visualising Solid Shapes - Exercise 10.3, Class 8 NCERT Solutions - Chapter 8 Comparing Quantities - Exercise 8.2, Understanding Quadrilaterals - Measures of the Exterior Angles of a Polygon, Class 8 NCERT Solutions - Chapter 7 Cubes and Cube Roots - Exercise 7.2, Class 8 NCERT Solutions - Chapter 14 Factorisation - Exercise 14.2, Class 8 NCERT Solutions - Chapter 9 Algebraic Expressions and Identities - Exercise 9.5 | Set 2, Class 8 NCERT Solutions - Chapter 3 Understanding Quadrilaterals - Exercise 3.4, Class 8 RD Sharma Solutions - Chapter 14 Compound Interest - Exercise 14.3 | Set 1, Reducing Equations to Simpler Form | Class 8 Maths, Rational Numbers Between Two Rational Numbers | Class 8 Maths, Class 8 NCERT Solutions - Chapter 14 Factorization - Exercise 14.1, Types of Quadrilaterals - Some Special Parallelograms, Class 8 RD Sharma Solutions - Chapter 7 Factorization - Exercise 7.3, Class 8 RD Sharma Solutions - Chapter 17 Understanding Shapes Special Types Of Quadrilaterals - Exercise 17.2 | Set 1, Class 8 RD Sharma Solutions - Chapter 17 Understanding Shapes Special Types Of Quadrilaterals - Exercise 17.2 | Set 2, Class 8 RD Sharma Solutions - Chapter 14 Compound Interest - Exercise 14.4 | Set 1, Class 10 RD Sharma Solutions - Chapter 4 Triangles - Exercise 4.2, Class 12 RD Sharma Solutions - Chapter 22 Differential Equations - Exercise 22.5 | Set 1, Class 8 RD Sharma - Chapter 21 Mensuration II (Volumes and Surface Areas of a Cuboid and a Cube) - Exercise 21.3 | Set 2, Write Interview

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