The floor of a rectangular hall has a perimeter of 280m its height is 6 metre find the cost of whitewashing the walls including doors Windows etc at the rate of rupees 10 per metre square
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Answer:
Step-by-step explanation:
area = 280m²
height = 6m
total surface area = 2(lb+bh+hl)
= 2(280+280/l*6+6*280/b)
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