NCERT Class 8 Mathematics Solutions: Chapter 11 –Mensuration Exercise 11.2 Part 7

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Understanding of Area of Trapezium

Understanding of Area of Trapezium

1. There is a pentagonal shaped park as shown in the figure. For finding its area Jyoti and Kavita divided it in two different ways. Find the area of this park using both ways. Can you suggest some other way of finding its area?

A Pentagonal Shaped Park


First way: By Jyoti’s diagram,

Area of pentagon Area of trapezium Area of trapezium

Second way: By Kavita’s diagram

Here, a perpendicular drawn to

Area of pentagon

So, total area of pentagon shaped park