Thread: [SOLVED] The Disk Method, Hwk

Consider the solid obtained by rotating the region bounded by the given curves about the y-axis.




so i dont think this is the washer method

y = (x/5)^2

Originally Posted by XplicitZero

Consider the solid obtained by rotating the region bounded by the given curves about the y-axis.



Okay, so i think this is the washer method( where the inside is empty)

so its " Pi ( outer radius)^2 - Pi ( Inner radius)^2 "

Can someone please explain to me how i can find both the radii

disk method ...

oh Okay Got it.

ans is 50pi =] thank you skeeter