Question

Please tell the answer and the method I really need it

Manish runs 3 times around a square part of the side of 80m and Santosh runs two
times around Rec. park with a length of 80m and breadth of 40m.
Who covers more distance?

Answer 1

Manish covers more distance. He covers 960m whereas Santosh only covers 480m

Explanation:

First we compute the perimeter of the square track

Perimeter of a square of side a = 4a

Here a = 80m

Perimeter of the square of side 80 => 4 x 80 = 320 m

Since Manish runs 3 times around it, total distance covered = 3 x 320 = 960

The perimeter of a rectangle with length L and breadth B = 2(L + B)

So perimeter of the rectangular track = 2(80 + 40) = 2 x 120 = 240

Since Santosh ran twice around this, total distance covered = 2 x 240 = 480