10) Use the shell method and the following curves about the $y$-axis. $y = 36 - x^2$, $y = 3x^2$, $x = 0$, for $x \ge 0$.
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$36 - x^2 = 3x^2$ $36 = 4x^2$ $9 = x^2$ $x = 3$ Show more…
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