Question

If we take 4 rounds around a field that is 160 m long and 90 m wide, what is the distance we walk in kilometres?

Answer 1

Perimeter of a rectangular field

= 2 x length + 2 x breadth

= 2 x 160 + 2 x 90 

= 320 + 180 

= 500 m

In one round distance walked is 500 m, 

hence, distance walked in 4 rounds

= 500 x 4 

= 2000 m 

= 2km 

∴ The distance walked in 4 rounds is 2 km