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July 30, 2014

July 30, 2014

Posted by **matrix school 2** on Thursday, August 13, 2009 at 1:15pm.

can you help me check for correction

the answer i got was = 625

You want to find volume. Are you rotating the region around a line, such as the x axis, or using cross sections?

Thanks, it was not specified.

As understood, find volume.

- integral Calculus -
**Marth**, Thursday, August 13, 2009 at 1:31pmYou say you got 625. What method did you use to find that number?

- integral Calculus -
**bobpursley**, Thursday, August 13, 2009 at 2:51pmThat is an area, not volume. Now, if that area is rotated about some axis, one can generate an volume, but the axis has to be specified. As the question stands now, it is meaningless.

I did it once for you rotating about the y axis. But in reality, it could be rotated about any axis to generate a volume.

- integral Calculus -
**Damon**, Thursday, August 13, 2009 at 5:38pmIf about x axis, I got 625 pi

It is hard to not get a pi if you spin something.

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