Question: Assume that water is being purified by causing it to flow through a conical filter that has a height of 15 inches and a radius

Assume that water is being purified by causing it to flow through a conical filter that has a height of 15 inches and a radius of 5 inches. If the depth of the water is decreasing at a rate of 1 inch per minute when the depth is 6 inches, at what rate is the volume of water flowing out of the filter at this instant?

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