# Thread: Finding the surface area of a function

1. ## Finding the surface area of a function

I successfully did a problem like this before but I am stuck on this one.

Here is the question:
Find the area of the surface obtained by rotating the curve

Any help would be greatly appreciated!

2. Originally Posted by s3a
I successfully did a problem like this before but I am stuck on this one.

Here is the question:

Find the area of the surface obtained by rotating the curve

S = $2 \pi \int_0^4 x \sqrt{1+\left[ y' \right]^2} \, dx$ ..