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sketch a washer and find the volume of the solid generated by revolving the region bounded by y=2x^2, y=0 and x=2 around the y-axis --> is 16pi the answer??

 

sketch a washer and find the volume of the solid generated by revolving the region bounded by y=8x-(x^2) and y=0.5(x^2) around the x axis --> Im not sure how to do this one..

 

for both write the required integral before evaluating

 

PLEASE HELP! Im homeschooled and I cant seem to grasp this concept by myself:(

 Mar 26, 2019
edited by Guest  Mar 26, 2019
 #1
avatar+30397 
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"sketch a washer and find the volume of the solid generated by revolving the region bounded by y=2x^2, y=0 and x=2 around the y-axis --> is 16pi the answer??"

 

(Yes, 16pi is the resulting volume).

 Mar 26, 2019
 #2
avatar+30397 
+3

"sketch a washer and find the volume of the solid generated by revolving the region bounded by y=8x-(x^2) and y=0.5(x^2) around the x axis --> Im not sure how to do this one."

 

 Mar 26, 2019

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