Question
Pinky runs around a square field of side $75 m$, Bob runs around a rectangular field with length $160 m$ and breadth $105 m.$ Who covers more distance and by how much?
✓
Answer
Given that, Distance covered by Pinky in one round = Perimeter of the square
$= 4$ $\times$ length of a side
$= 4$ $\times$ $75 m = 300 m$
Distance covered by Bob in one round = Perimeter of the rectangle
$= 2$ $\times$ (length + breadth)
$= 2$ $\times$ $(160 m + 105 m)$
$= 2$ $\times$ $265 m = 530 m$
Difference in the distance covered $= 530 m – 300 m = 230 m.$
Thus, Bob covers more distance by $230 m.$
$= 4$ $\times$ length of a side
$= 4$ $\times$ $75 m = 300 m$
Distance covered by Bob in one round = Perimeter of the rectangle
$= 2$ $\times$ (length + breadth)
$= 2$ $\times$ $(160 m + 105 m)$
$= 2$ $\times$ $265 m = 530 m$
Difference in the distance covered $= 530 m – 300 m = 230 m.$
Thus, Bob covers more distance by $230 m.$
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