a swimming pool is 20 cm long, 15m in breadth and 4m in depth find cost of cementing floor and walls at raye rs.12 per square metre
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4m=400cm
Dimensions of the pool=20×15×400
Surface area of the floor and the walls
=2(lh+bh)+lb
=2(20×4+15×4) +20×15 m
=2(80+60)+300 m
=2(140+300)m
=580m square
cost of cementing the floor and the walls @of 1m square=rs.12
cost for 580m square=580×12
=rs. 6960.
hope it helped
Dimensions of the pool=20×15×400
Surface area of the floor and the walls
=2(lh+bh)+lb
=2(20×4+15×4) +20×15 m
=2(80+60)+300 m
=2(140+300)m
=580m square
cost of cementing the floor and the walls @of 1m square=rs.12
cost for 580m square=580×12
=rs. 6960.
hope it helped
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