A cylindrical roller is used to Polish a rectangular table. The length of the roller is 0.75m and the diameter is 0.21 if the roller roll-over the table 20 times completelyfind the area of the table
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Curved Surface area of Cylinder=2*22/7*r*h
=2*22/7*0.21/2*0.75
=(2*22*0.21*0.75)/(7*2)
=0.495 m^2
Area of Table=20*0.495
=9.9 m^2
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