The surface of water pool is in the shape of a square whose side is 450 cm. Its exterior 20 cm width edge part cemented along the side of the square. Find the area of that cemented part. Find cost for cementing if the rate is ` 15 per sq.cm.
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>>A swimming pool is 20m in length, 15m in
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A swimming pool is 20m in length, 15m in breadth and 4m in depth. Find the cost of Painting its four walls at the rate of Rs. 20 per spuare metre.
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Given length of swimming pool =20m
Breadth of swimming pool =15m
Height of swimming pool =4m
Curved surface area of cuboid =2(l+b)h
=2[20+15]×4
=2×35×4
CSA of cuboid (pool)=280m
2
If cost of painting is =20 Rs/sq. m
then cost of painting four walls of pool =20×280
Cost =5600Rs.
Hence cost of painting four walls of swimming pool is Rs. 5600.
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