a solid cylinder has total surface area as 231cm^2. the curved surfave area is 2/3 of the total surface area. find its radius?
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≡QUESTION≡
A solid cylinder has total surface area as 231 cm². The curved surface area is 2/3 of the total surface area. Find its radius.
║⊕ANSWER⊕║
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TSA = 231 cm²
CSA = 2/3 of TSA
= 2/3 * 231
= 154 cm²
TSA = 2πrh + 2πr²
r = 3.5 cm
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