Area and Volume with Integrals

Edencthompson

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I do not think I solved any of these parts right, so can someone please send me their work to check with? Thanks!
 

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Part a is fine. But in part b, you seem to be thinking that the integral of the square is the square of the integral. It is not. Try again.

There are other basic errors, but that's the one you need to fix. You really didn't do anything for c. We can work on that once you have b.
 
Part b seems fine to me.

Now calculate the volume to the right of k just like you did in part b. Then find k.
 
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