the curved surface area of a cylinder is 1000 cm square and the radius of its base is 21 centimetre find the total surface area of the cylinder
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Answer:
3772 cm^2
Step-by-step explanation:
Radius=21 cm
curved surface area=1000 cm^2
curved surface area of cylinder=2πrh
=>250=2×22/7×21×h
=>250=33h
=>h=250/33 cm
total surface area of cylinder=2πr(h+r)
=>2×22/7×21(250/33+21)
=>6×22(250+693/33)
=>6×22×943/33
=>3772 cm^2
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