Find the missing side. Round your answer to the nearest tenth

What is the length of the unknown leg in the right triangle ?

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

The graph shows the function y equal 3x-1 what are the coordinates of the intercepts