Not getting the right answer. Answer is supposedly pi/4(5rad5-1). Can anyone help?
btw this is off the top of my head: volume of revolution. idk if that's what's being asked but it appears that way.
find inverse bc v of revolution is for x-axis
y = -sqrt(x-9)
integrate with set limits as: pi x (y)^2 = 17pi/2
idk if this is what you're looking for but it's my way of answering that question