math
posted by cheyenne .
The volume of a cone is given by the formula V = (1/3)r2h. A cone has a volume of 11,907 cm3 and a radius of 21 cm.
what would be the height of the cone.

Your formula is incorrect , should be
V = (1/3)π r^2 h
11907 = (1/3)π(21^2)h
h = 3(11907)/(441π) = 81/π or appr. 25.78 cm