Question

A swimming pool is 20 m long and 15 m wide and 3m deep.what will be the cost of repairing the floor and wall of the pool at the rate of 25 per square metre ? (a.17,250 b)15,720 c)12750

d.non of these

Answer 1

Length (l)=20m(l)=20m

Breadth (b)=15m(b)=15m

Height (h)=3m(h)=3m

Area of Floor =lb=20×15=300m2=lb=20×15=300m2

Area of Walls =2(l+b)h=2(20+15)3=6×35=210m2=2(l+b)h=2(20+15)3=6×35=210m2

Total Area =300+210=510\m2=300+210=510\m2

Cost of repairing =510×25=12750

I hope it is clear for you.
Please mark my answer as the brainliest.