A rectangular hall has dimensions 6m*4m*3m.Find the cost of colouring it's inner wall at rate of ruppes 250 per square meters.What is the maximum length of a rod that can be kept in this hall??
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area of rectangular hall=6×4×3=72m square
cost of 1 square meter=250
so the cost of 72 meter square=250×72=18000 rs
cost of 1 square meter=250
so the cost of 72 meter square=250×72=18000 rs
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