1 Answer

Spade · Answer 1 · 2019-12-06T18:32:35+0000

Hi,

Formula to calculate the surface area of cylinder:

$a = 2 * \pi * r * h + 2 * \pi * {r}^(2)$

Solving:

$a = 2 * \pi * 2 * 5 + 2 * \pi * {2}^(2) \\ a = 2 * \pi * 10 + 2 * \pi * 4 \\ a = 6.28 * 10 + 6.28 * 4 \\ a = 62.8 + 25.12 \\ a = 87.92 / 3.14 \\ a = 28\pi$

Answer: B

Hope this helps.
If you have any questions left feel free to ask.
r3t40

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