Question

10. a person walks at the rate of 4km/h.How long will he take to go round a square park 5 times , whose area is 2500 m sq.?

Answer 1

length of square=50m
peri of sq=50*4=200m
5 times=200*5=1000m=1km
time=d/v
t=1/4=0.25 hr=15 min