Question

Pinky runs around a square field of side 7500 cm, Bob runs around a rectangular field with length 160 m and breadth 105 m. Who covers more distance and by how much ?

Answer 1

Perimeter of square = Distance covered by Pinky = 4*75 m = 300 m
Distance covered by Bob = Perimeter of rectangle = 2( 160 + 105)
= 2*265 m
=530 m
So Bob runs more by 530-300 = 230 m

Answer 2

Distance covered by Pinky = Perimeter of square field = 4 * side = 4* 7500 = 30000 cm = 300 m
Distance covered by Bob = Perimeter of rectangular field = 2(l+b) = 2(160+105) = 2*265 = 530 m
Therefore, Bob covers more distance by (530-300)m= 230 m