Question

The disk x^2+y^2a) to generate a solid shaped doughnut. Find its volume.

Answer 1

Should the question be "is revolved about the line x=b (where b>a)" ? Otherwise its a good bit trickier...

Answer 2

yeah thats it, im using the washer method

Answer 3

\[x =\sqrt(a^2-y^2)\]

Answer 4

plus or minus sqrt

Answer 5

\[dV=\pi((\sqrt(2^2-y^2)^2-(\sqrt(a^2-y^2)^2)dy\]

Answer 6

is this correct?

Answer 7

2 is actually a

Answer 8

@dan815