Question

if a right circular cone has a volume of 15 cubic ft and a radius of 3 ft, what is the height of the cone?

Answer 1

volume of cone=1/3 times height times pir^2
v=15
r=3
15=1/3 hpi3^2
15=1/3hpi9
15=9/3hpi
15=3hpi
divide 3
5=hpi
h=5/pi
pi=aprox 3.14
5/3.14=1.59

1.59 ft