Bhavna runs 10 times around a square field of side 80 m. Her sister Su

1.	Bhavna runs 10 times around a square field of side 80 m. Her sister Sushmita runs 8 times around a rectangular field with length 150 m and breadth 60 m. Who covers more distance? By how much?
Answer» Distance covered by Bhavana in one round = Perimeter of the square field = 4 × side of square field = 4 × 80 m = 320 m Distance covered in 10 rounds = (320 × 10)m = 3200 m Distance covered by Sushmita in one round = Perimeter of the rectangular field = 2 × (length + breadth) = 2 × (150 + 60)m = 2 × 210 = 420 m Distance covered in 8 rounds = 420 × 8 = 3360 m Hence, Sushmita has covered 160 m more than the distance coverd by Bhavna.

Bhavna runs 10 times around a square field of side 80 m. Her sister Sushmita runs 8 times around a rectangular field with length 150 m and breadth 60 m. Who covers more distance? By how much?

Answer»

Distance covered by Bhavana in one round = Perimeter of the square field

= 4 × side of square field = 4 × 80 m = 320 m

Distance covered in 10 rounds = (320 × 10)m = 3200 m

Distance covered by Sushmita in one round

= Perimeter of the rectangular field

= 2 × (length + breadth)

= 2 × (150 + 60)m = 2 × 210 = 420 m

Distance covered in 8 rounds = 420 × 8 = 3360 m

Hence, Sushmita has covered 160 m more than the distance coverd by Bhavna.