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son4ous [18]
2 years ago
5

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

Mathematics
1 answer:
lianna [129]2 years ago
7 0
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
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