find the cost of polishing the floor of square hall at rate of rs. 15 per meter sq., if each of the hall is 12.5 meter
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Sol:
Length of the swimming pool = 20 m
Breadth of the swimming pool = 14 m
Depth of the swimming pool = 3 m
Area of four walls = 2h(l + b)
= 2 x 3(20 + 14)
= 6(34)
= 204 m2.
Area of the base = length x breadth
= 20 x 14
= 280 m2.
Total area of cementing = 204 + 280 = 484 m2.
Cost of cementing = Rs 15 per sq m
Total cost of cementing = 484 x 15 = Rs 7260.
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