Question

The length and breadth of a playground are 18 M and 35 M respectively.

(1).Find the cost of levelling it at rupees 4. 50 per square metre.

(2).How long will a boy take to go three times round the field, if he walks at rate of 1.5 m per second?

Answer 1

Area=18*35=630
1)630*4.50=2835 r.
2)Perimeter=2(18+35)=2*53=106m
106/1.5=???