SOLUTION: I can't seem to figure out how to work this problem: Find the volume of a cylinder, do not approximate pi. r = (y-3)cm h = 7ycm I've tried: y^2-6*7= 7y^2-42 and ended up w

Question 277435: I can't seem to figure out how to work this problem:
Find the volume of a cylinder, do not approximate pi.
r = (y-3)cm
h = 7ycm
I've tried:
y^2-6*7= 7y^2-42
and
ended up with y^2-3y-9

Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
r = (y-3)cm
h = 7ycm
V=pir^2h
V=22/7*(y-3)^2*7y
V=22/7(y^2-6y+9)7y
V=22/7*7y(y^2-6y+9)
V=22y(y^2-6y+9) ans.