A swimming pool is 20 m in length , 15 m in bredth and 4 m in depth . Find the cost of painting it's four walls at the rate of 20 rupees per Square metre
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Area of four walls of the room = [ 2 ( l + b ) h ]
=> 2×35 × 4
=> 70 × 4
=> 280
area = 280 square metre.
cost of painting room = 280×20 = 5600
hence the required cost is 5600 Rs.
=> 2×35 × 4
=> 70 × 4
=> 280
area = 280 square metre.
cost of painting room = 280×20 = 5600
hence the required cost is 5600 Rs.
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