Question

A swimming pool is 50m in length 30m in breadth and 2.5m in depth. Find the cost of cementing its floor and walls at the rate of ₹27 per square metre. ​

Answer 1

Step-by-step explanation:

given

length of swimming pool=50m

breadth of swimming pool=30

depth of swimming pool=2.5m

so,

surface area of swimming pool

=2{lw+lh+hw}

=2{50*30+50*2.5+2.5*30}

=2{1500+125+75}

=2*1700

=3400m^2

given in the question

the cost of cementing its floor and walls at the rate of ₹27 per square metre

so,

the cost of cementing of swimming pool

=3400*27

=₹91,800

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Answer 2

Answer:

Given,

Length = 50m

Breadth = 30m

Height = 2.5m

__________________________________

Total Surface Area of Ractangular Pool =

= (50 × 30) + 2(50×2.5) + 2(30×2.5)

= (1500 + 250 + 150) Metres²

= 1900 Metres²

__________________________________

At the rate of ₹27 per Metres²

So again,

= 1900 × 27

= ₹ 51300

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