Find the volume of the solid that lies under the paraboloid z = 7² - x² - y² and above region R = {(r, 0) | 0 ≤ r ≤ 7, 0π ≤ 0 ≤ 1}. A plot of an example of a similar solid is shown below. (Answ accurate to 3 significant figures).

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A:

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A: Recall the following fact.