Cone radius of 15 mm and a volume of 5890.5 mm3.What is the height of this cone?Show work. PLSSS help...

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

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

1.based of the diagrams what is the the value of x? 2.how would you verify your answer for x