Question

May I please have help from anyone thank you so much !

Answer 1

Answer: Choice D

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Explanation:

The formula for the surface area of a cylinder is

$SA = 2\pi*r^2 + 2\pi*r*h$

We then replace r with 10 and h with 25. Keep in mind that the diameter is 20 mm, so the radius is half that at 10 mm.

So that's how we get to

$SA = 2\pi*10^2 + 2\pi*10*25$

Answer 2

Answer choice d hope this helps