Hitunglah volume benda putar yg trjadi jika y=x^2 - 4, y= 0 ,y= 2 terhadap sumbu y beserta gambarnya
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![V= \pi \int\limits^2_0 {(y+4)} \, dy \\ \\ = \frac{y^2}{2}+4y \left[\begin{array}{ccc}2\\0\end{array}\right] \pi \\ \\ = (\frac{4}{2}+4(2)-0 ) \pi \\ \\ = 10 \pi](https://tex.z-dn.net/?f=V%3D+%5Cpi++%5Cint%5Climits%5E2_0+%7B%28y%2B4%29%7D+%5C%2C+dy++%5C%5C++%5C%5C+%3D+%5Cfrac%7By%5E2%7D%7B2%7D%2B4y++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2%5C%5C0%5Cend%7Barray%7D%5Cright%5D+++%5Cpi++%5C%5C++%5C%5C+%3D+%28%5Cfrac%7B4%7D%7B2%7D%2B4%282%29-0+%29+%5Cpi+%5C%5C++%5C%5C+%3D+10+%5Cpi+ "V= \pi \int\limits^2_0 {(y+4)} \, dy \\ \\ = \frac{y^2}{2}+4y \left[\begin{array}{ccc}2\\0\end{array}\right] \pi \\ \\ = (\frac{4}{2}+4(2)-0 ) \pi \\ \\ = 10 \pi")
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