volume of cylinder=height times (area of base) area of base=circle=pi times radius^2
so volume=height times pi times radus^2
if pi=3.14 and volume=50240 and radius=40, solve for height subsitute 50240=height times 3.14 times 40^2 50240=height times 3.14 times 1600 50240=height times 5024 divide both sides by 5024 10=height