RD Sharma Solutions Class 8 Area Of Trapezium And Polygon

RD Sharma Solutions Class 8 Chapter 20

In previous chapters, we have learned to find the area and perimeters of various plane figures like triangles, squares, rhombuses etc. Now, in this chapter, we will learn to find the area of the trapezium. We will also practice different problems on finding the areas of polygons by utilizing the formulas of the area of triangle and trapezium.

The areas and perimeters of various plane figures are given below:

Area of Rectangle = length \(\times \) Breadth

Perimeter of Rectangle = 2 (Length + Breadth)

Area of Square = Side \(\times \) Side

Perimeter of Square = 4 \(\times \) Side

Area of parallelogram = Base \(\times \) Height

Perimeter of parallelogram  = 2 \(\times \) (Sum of two adjacent sides)

Area of Triangle = \(\frac{1}{2}\) base \(\times \) height

Area of Circle = \(\pi \; r^{2}\) and Perimeter of Circle = \(2 \;\pi \; r\)

RD Sharma Solutions for Class 8th Mensuration will help you to understand the steps and tricks involved in finding the area of a trapezium and a polygon from the basics. Now understand this concept in detail with complete exercise wise RD Sharma Solutions that will make your learning much easier and will prepare you well for solving different complex problems related to Mensuration very quickly.

Practise This Question

A cylindrical bell of radius r and height h has a density ρ. The mass of the bell is: