Find the area of a square park whose perimeter is 320 m.

Given: Perimeter of square park = 320 m
⇒ 4 x side = 320
⇒ side = 320/4 = 80 m
Now, Area of square park = side x side = 80 x 80 = 6400 m²
Thus, the area of square park is 6400 m².

Class 7 Maths Chapter 11 Exercise 11.1

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