Please help quickly!! I’m in 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

What is the scale factor of two similar pyramids with volumes of 64 cubic feet and 8 cubic feet

Which graph of a hyperbola represents the equation 16x^2-y^2=16