math, URGENTT!!

I'm trying to find the volume of a hemisphere by rotating it around the x-axis. I know how to and can do this with one exception.
what is the integral of

y=(2/2)((2^2)-(x^2))

???

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asked by Teniel
  1. i typed the y value wrong it is actually

    y=(2/2)((2^2)-(x^2))^(1/2)

    sorry

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    posted by Teniel

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