the curved surface area of a cylinder is 1000 CM square and the radius of its base is 21 cm find the total surface area of the cylinder
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sorry I am on leave due to personal reasons so I can not help
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C.S.A=1000 cm^2
r=21 cm
T.S.A=C.S.A.+2r=1000+2×21=1042 cm^2
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