Answer: Choice D
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Explanation:
The formula for the surface area of a cylinder is

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

Answer is 7
hope it helps
24 1/2 = 24.5
3 1/2 = 3.5
24.5/3.5 = 7
Answer:
78.5
Step-by-step explanation:
x3.14 (pie)
so then substitute.
5x5=25
25x3.14=78.5
Answer:
224
Step-by-step explanation:
(100+12)*2