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A conical paper cup 20 cm across the top and 15 cm deep is full of water. The cup springs a leak at the bottom and losses water at 5 cu. cm per minute. The value of (d^(2)h)/(dt^(2))"(""in cm"//min^(2)")" when the water is exactly 7.5 "cm deep and"(d^(2)V)/(dt^(2))=-4/9cm^(3)//min^(2)is |
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Answer» `-2/5` |
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