Which of the following is an example of conditional probability?

a. probability of drawing a club from a deck of 52 cards, given that the card you draw isn't a heart
b. probability of drawing a club from a deck of 52 cards.
c. probability of hitting a home run
d. probability of getting an a on a test

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