A water tank has the shape of an inverted circular cone with base radius 4 m and height 6 m. If water is being pumped into the tank at a rate of 16 m3 /min, find the rate at which the water level is rising when the water is 3 m deep.

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.