Question

A swimming pool is 40m long,25m broad and 4 m deep.What is the cost of cementing its floor and side at the rate of Rs 20 square per metere

Answer 1

first we have to find its :- lateral surface area:- 2(l+b)h =
here ,l=40m,b=25m,h=4m
so, 2(40+25)×4=8(65)= 520m^2
now, total cost of cementing its floor =
520×20
=10400Rs..
Hope this will help u