# NCERT Class 8 Mathematics Solutions: Chapter 11 –Mensuration Exercise 11.2 Part 5

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1. Mohan wants to buy a trapezium shaped field. Its side along the river is parallel to and twice the side along the road. If the area of this field is and the perpendicular distance between the two parallel sides is , find the length of the side along the river.

Answer:

Given,

Perpendicular distance

Area of the trapezium shaped field

Consider,

Side along the road be and side along the river

Area of the trapezium field

So, the side along the river