What is the total surface area of a cylinder whose length is twice the radius

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asked Oct 22, 2019 46.8k views

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Pumpkinzzz · Answer 1 · 2019-10-28T13:03:16+0000

lateral surface area of a cylinder: 2πrh, r is the radius, h is the height.
area of the top and bottom circle: πr²
when h=2r, the total surface area is:
2πr(2r)+πr²+πr²=6πr²
the answer is 6πr²

What is the total surface area of a cylinder whose length is twice the radius

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