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Qn #1825
00:00
Water runs into a conical tank of radius $5$ ft and height $10$ ft at a constant rate of
$2\text{ ft}^3/\text{min}$.
How fast is the water level rising when the water is $6$ ft deep?
Qn #1166
If the radius of the circle changes at the rate of , at what rate does the circle's area change when the radius is 10m?