Which of the following pieces of graph are concave up? i. i. iii. iv. A i. only B ii. and iv. C i. and iii. D i. and iv. E i. and iii.

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A: given curves y=225-x2  , y=9 find the volume of the solid that results when the region enclosed by…

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Q: Find the volume of the solid that results when the region enclosed by the given curves is revolved…

A: The given curves are y=225-x2 and y=9.

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