A solid is composed of a cylinder with hemispherical ends. If the length of the whole solid is 108 cm. and the diameter of the cylinder is 36cm, find the cost of polishing the surface at the rate of 7paise percm2.
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r of cylinder=36/2=18cm
h of cylinder=108-2×radii of hemisphere =108-36=72cm
TSAof solid=2πrh+4πr^2=8146+4073=12219cm^2
cost= Rs. area×7/100
h of cylinder=108-2×radii of hemisphere =108-36=72cm
TSAof solid=2πrh+4πr^2=8146+4073=12219cm^2
cost= Rs. area×7/100
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