Which information is required to prove that angle abd is congruent to angle acd? (6 points)
segment ac is congruent to segment ab.
segment ad is congruent to segment ac.
segment bd is congruent to segment ad.
segment ab is congruent to segment bd.

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min