Question

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

Answer 1

here it is!:)

Answer 2

You can integrate using Integration by washer/shells. Do you know how to do it?

Answer 3

no, i dont.

Answer 4

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 \[\int\limits_{0}^{\pi/3} \pi (secx)^2- \pi (e^-x)^2 dx\]

Answer 5

doesnt it involve \[V=\Pi \int\limits_{\Pi}^{0} f(x)\]

Answer 6

is it the same?

Answer 7

Yea, its similiar

Answer 8

ok, i think i know how to do it, i'll try it out and see what i get.

Answer 9

ok :D

Answer 10

ok i got this... V=\[\Pi[\tan \Pi/3+(e^-2(\Pi/3))/2]-\Pi[\tan0+(1/2)]\]

Answer 11

Yea, that should be right