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Find the volume of the solid that lies within the sphere $x^2 + y^2 + z^2 =25$, above the $xy$-plane, and outside the cone $z=3\sqrt{x^2+y^2}$.

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    $z=\sqrt{3(x^2+y^2)}$ or $z=3\sqrt{(x^2+y^2)}$?2012-12-01
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    z= 3 * sqrt(x^2+y^2)2012-12-01
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    your second one, sorry I don't know how to type sqrt.2012-12-01
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    Please, try to write in TeX. Use dollar signs `$` to enclose your formulas and backslash for commands. For example, `\sqrt{}`.2012-12-01
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    For some basic information about writing math at this site see e.g. [here](http://meta.math.stackexchange.com/questions/5020/) or [here](http://meta.stackexchange.com/a/70559/155238).2012-12-01

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