Answer:
h=1ft
Explanation:
The volume of a cone is:
v=πr^h/3
plug in the values (I am assuming not 1/18π but 1/18×π):
1/18π= π1/3^2h/3
Get rid of the radius:
1/3^2=1/9
Continue:
π/18= πh/3*1/9= πh/18
Remove the denominators:
π=πh
Divide both sides by π :
h=1