A swimming pool is 20m in length 15 m in breadth 4 m in depth.find the cost of cementing its floor and walls at ₹35 pr sq.m
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Area of floor and it's walls=2(lh+bh)lb
=570msquare
Therefore,cost of cementing= 35×570=Rs19950
=570msquare
Therefore,cost of cementing= 35×570=Rs19950
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