MHB Revolving Volume of R on x=3 using Shell Method

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If the area of R is equal to 2 m^2 and the volume of R is equal to 4pi m^3 when it's revolving on Y by using shell method. Find the volume of R when it's revolving on x=3 ?

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Can you please help me ?
I have tried to do it many times but still got the wrong answer.
Thank you in advance.
 
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$\displaystyle R = \int_1^3 f(x) \, dx = 2m^2$

$\displaystyle V_{x=0} = 2\pi \int_1^3 x \cdot f(x) \, dx = 4\pi m^3$

$\displaystyle V_{x=3} = 2\pi \int_1^3 (3-x) \cdot f(x) \, dx = \, ?$
 
skeeter said:
$\displaystyle R = \int_1^3 f(x) \, dx = 2m^2$

$\displaystyle V_{x=0} = 2\pi \int_1^3 x \cdot f(x) \, dx = 4\pi m^3$

$\displaystyle V_{x=3} = 2\pi \int_1^3 (3-x) \cdot f(x) \, dx = \, ?$
Thank you very much.
I finally find the answer.
 
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