Find the surface area of the cylinder in terms of pi

Question

anonymous · Answer

attachment

anonymous · Answer

$$surface.area =2 \pi r^2+ 2 \pi rh$$

anonymous · Answer

the diameter is 17
so r = 8.5

anonymous · Answer

h= 13
solve everything except pi

anonymous · Answer

yes but when I did that before I got some really huge number that doesn't fit with any of the choices...what do you mean except pi?

anonymous · Answer

hmm
$$A= 2 \pi (r^2+rh)$$

anonymous · Answer

I still got a number to big with the one above

anonymous · Answer

okay i will tell the final answer

anonymous · Answer

what are the options

anonymous · Answer

but @aajugdar please tell me how you got your answer cause I have more questions like this and I want to know how to do it as well..

anonymous · Answer

wtf ~_~

anonymous · Answer

haha yeah Im lost

anonymous · Answer

what are the units

anonymous · Answer

haha JK I was on the wrong problem with the answers here the right ones are
365.5 cm^2
799 cm^2
586.5cm^2
1,020cm^2

anonymous · Answer

each has the pi up in the corner before cm btw @aajugdar

anonymous · Answer

okay lets see now
i got 365.5pi cm^2

anonymous · Answer

okay

anonymous · Answer

$$A= 2 \pi r ( r+h)$$
$$A= 2 \pi *8.5(8.5+13)$$
$$A=2 \pi *8.5(21.5)$$

anonymous · Answer

$$2 \pi (182.75) = 365.5 \pi cm^2$$

anonymous · Answer

Okay thanks!