Question

What is the surface area of a piece of pipe that is open at both ends, has a radius of 6 inches, and a height of 18 inches? (Use 3.14 for π.)

339.12 in.2
904.32 in.2
678.24 in.2
548.96 in.2

Answer 1

\[
2 \pi (6) (18)
\]

Answer 2

678.24

Answer 3

I thought the formula for surface area of a cylinder was 2(pi r 2) + (2 pi r)* h

Answer 4

It is open on both ends

Answer 5

Ah okay, I was going to go about it a different way. Nevermind. :)