Question

a school campus is rectangular in shape with a lenth of 310m and birth 218m. how much time will a boy take to run 5 time around the school boundary if the runs at the rate of 5.5m per second​

Answer 1

Answer:

Length= 310 m

Breadth= 218 m

As the boy runs along the boundary, we have to calculate the perimeter.

Perimeter= {2x(310+218)} m = {2x 528} m = 1056 m

Distance covered by the boy= (5x 1056) m =5280 m

To cover 5.5 m, time taken= 1 s

∴To cover 1 m, time taken= (1/5.5) s =(1x10/5.5x10) s = 10/55 s

∴To cover 5280 m, time taken= 960 s = 16 min

So, the time taken is 16 minutes.