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Find the volume formed by rotating the region enclosed by:
y=2sqrt(x) and y=x about the line y=4
 one year ago
 one year ago
Find the volume formed by rotating the region enclosed by: y=2sqrt(x) and y=x about the line y=4
 one year ago
 one year ago

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SithsAndGigglesBest ResponseYou've already chosen the best response.2
The black length represents the outer radius, and the blue one represents the inner radius. Using the disk method, the volume is \[\begin{align*}V&=\pi\int_0^4\left((4x)^2(42\sqrt x)^2\right)\;dx\\ &=\pi\int_0^4\left((168x+x^2)(168\sqrt x+4x)\right)\;dx\\ &=\pi\int_0^4\left(x^212x+8\sqrt x\right)\;dx\\ \vdots \end{align*}\]
 one year ago
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