Question

water is leaking from a conical funnel at the rate of 5 cm 2 /s. if the radius of the base of the funnel is 5 cm and the altitude is 10 cm, find the rate at which the water level is dropping when it is 2.5 cm from the top.

Answer 1

See image.

Explanation:

The final answer given in the image is negative because of sign conventions. If you choose to call water flowing out of the funnel as positive, then the answer you give for the final flow rate would also be positive.