a cylindrical oil tank has diameter of 7m and height of 9m.if the inner side of the tank has to be painted all over, what will it cost at ₹35 per sq.m?
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total surface area=2*22/7*3.5(3.5+9)
22(12.5)
275.0sq m
cost =275*35=9625rs
22(12.5)
275.0sq m
cost =275*35=9625rs
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