solution for question 7

Perimeter = Distance covered in 8 min. =		12000	x 8	m = 1600 m.
		60

Let length = 3x metres and breadth = 2x metres.

Then, 2(3x + 2x) = 1600 or x = 160.

 Length = 480 m and Breadth = 320 m.

 Area = (480 x 320) m² = 153600 m².