Answer:
250
which is around 785 cm (C)
Explanation:
Surface area of a cylinder can be found by finding the area of the two circles.
So the diameter of the circle is 10, meaning the radius is 5. (10/2)
= 50

Multiply by 2 because there are two of these circles.
Now to find the "long part", we find the circumfrence of the circle (
d or 2
r) and multiply it by the height (15)
10
* 15 = 150

add these two up and you get...
250
which is around 785 cm. (C)