Question

A swimming pool is 20 m in length,15 m in breadth,4 m in depth.Find the cost of cementing its floor and walls at $35 per m²​

Answer 1

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Answer 2

Mensuration

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>A swimming pool is 20 m in ...

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A swimming pool is 20 m in length, 15 m in breadth, and 4 m in depth. Find the cost of corner its floor and walls at the rate of Rs.12 per square meter.

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Answer

Given that,

l=20m

b=15m

d=4m (d-h)

We know that,

Area for coner its floor2d(l+b)+lb

=2(4)(20+15)+(20×15)

=8×35+300

=280+300

=580m

2

Rate of coner its floor Rs.12/m

2

∴ Total cost of coner its floor =580×12

Rs.6960

Then,

We get Rs.6960