a = 2πr(r+h) = 2π(9)(9 + 19) = 504π
So, D
How did you get 523?
1. What is the surface area of the cylinder in terms of pi? The diagram is not drawn to scale.
A) 990 pi in^2
B) 342 pi in^2
C) 378 pi in^2
D) 504 pi in^2
The radius is 9 and the height is 19.
when I solve this, no matter what the formula is, I always get 523, which means there's something I'm doing wrong. Any help would be really great. Thank you
6 answers
I used the formula, 2 pi r^2+ pi dh.
It seems what you did was much much easier though.
It seems what you did was much much easier though.
Thank you so much by the way!
your formula is correct, but your answer is not. Oh, well.
D) 504 pi in^2
thanks s
1 answer