A room is 4m high . The cost of carpeting it's floor at it's 50 per sq.m is rs 3200. Find the cost painting it's wall at rs 25per as.m
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h=4m
rate=50
cost=3200
area=3200÷50
=64sq m
lateral surface area=( 64×4)- 128
1wall=50×lsa÷4
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The total cost of painting the walls is Rs 6,400.
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