Posted by **Raven** on Thursday, April 14, 2011 at 10:35pm.

related rates: the base of a pyramid-shaped tank is a square with sides of length 12 meters, and the vertex pyramid is 13 meters above the base. the tank is filled to a depth of 5 meters, and water is flowing into the tank at the rate of 2 cubic meters er second. find the rate of change of the depth of water in the tank.