Question

a swimming pool is 25 m long 20 m wide and 2 m deep find the cost of cementing its floor and four walls @ rupees 20 per metre square

Answer 1

hey mate!

here is your answer:

area of cementing floor and four walls=2(length+breadth)*height+length*breadth
area=2(25+20)*2+25*20
=4*45+500
=180+500=680m^2

now. cost of cementing=680*20=13600rs

hope it helped