Question

how long will a boy take to go three times round the field is he worked at rate of 1.5 m per second

Answer 1

Answer:What is the circumference of the field?

Step-by-step explanation:

Answer 2

if we solve with this know measures ,then
let radius be r
circumference of circle =2πr i.e 2*22/7*r=44/7*r
as he has to go 3 times circumference=3*44/7*r =132/7r
his speed =1.5 m/s
time = 132/7r*10/15= 88/7r