The equation v=13πr2h relates the volume v, the radius r, and the height h of a cone. write h in terms of v and r.

V=(1/3)pir^2h
times both sides by 3
3V=pir^2h
divide both sides by (pir^2)

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!