Question

Find the radius. Round to the nearest tenth.

A cone has the volume
of 538.25 cm3 and a height
of 17 cm. What is the
radius?
r=?
h=17cm

Answer 1

Explanation:

V = 1/3 * pi * r^2 * h

r = ?

pi = 3.14

h = 17 cm

3*V = pi * r^2 h = r^2 Divide by pi

3*V/pi = r^2 h = r^2 Divide by h

3*V/(pi*h) =r^2 Take the square root of the left to get just r

sqrt(3*V/(pi*h)) = r Now solve the equation.

sqrt(3*538.25 /(3.14*17)) = r

sqrt(1614 / 53.38) =

r = sqrt(30.24)

r = 5.493