A swimming pool is 15m in length, 12 m in breadth and 2 m in depth. Find the cost of cementing the floor and walls at the rate of 15 per sq. m.
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Answer: Length of the pool (l)=15m
The breadth of pool (b)=12m
Height of pool (h)=2m
Now,
Area of floor
=l×b
=15×12=180m
2
Area of walls
=2h(l+b)
=2×2(15+12)
=4×27=108m
2
Total area =108+180=288m
2
Cost of cementing =Rs.15 per square meter
Therefore,
Cost of cementing the floor and wall of pool =15×288=Rs.4320
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