The diameter of the base of a right circular cylinder is 42 cm and its height is 10 cm. Find the
curved surface area and total surface area of the cylinder.
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Answer:
CSA = 2πrh
2*22/7*21*10
2*22*3*10
44*30
1320cm²
TSA = 2πrh+2πr²
= 2*22/7*21*10+2*22/7*21*21
= 2*22/7*21 (10+21)
=2*22*3(31)
= 44 *93
=4092cm²
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