Question

Find the volume of the solid obtained by rotating the region under the curve y=1/(sqrt(x+1)) from 0 to 1 about the x-axis.

I don't remember these volume questions too well so hopefully someone can clarify.

radius = integral 1/(sqrt(x+1)) dx
volume = 2pie(radius) ?

Answer 1

use the washer method

Answer 2

v=pie(radius)^2 ?

Answer 3

your using integrals right?

Answer 4

yeah

Answer 5

okay, so this is gonna form a solid with like a hole inside it like a washer, so we can use this formula: