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i need help in this question..i'm going to attach the problem.

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here it is!:)
1 Attachment
You can integrate using Integration by washer/shells. Do you know how to do it?
no, i dont.

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Imagine slicing it into a million pieces. The idea is that surface area of one slice and add it from 0 to pi/3 The formula is \[\int\limits_{0}^{\pi/3} \pi (secx)^2- \pi (e^-x)^2 dx\]
doesnt it involve \[V=\Pi \int\limits_{\Pi}^{0} f(x)\]
is it the same?
Yea, its similiar
ok, i think i know how to do it, i'll try it out and see what i get.
ok :D
ok i got this... V=\[\Pi[\tan \Pi/3+(e^-2(\Pi/3))/2]-\Pi[\tan0+(1/2)]\]
Yea, that should be right

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