the volume of a right circular cone is 108pi m^3, and the radius of the base is 3m. Find the central angle of the sector which corresponds to the lateral area of the cone.

Question

anonymous · Answer

@mathmate  @sillynikki1

anonymous · Answer

@Luigi0210  @Zale101

badmood · Answer

volume 1/3 * pi * r^2 * h = 108 pi 
And r = 3 m, so h = 36 m 
With r and h we can find slanting height L = ./ r^2 + h^2 = 36.13 m 
Angle of the sector in degree = 2 * r * 180 / L 
@ = 29.89 degree

anonymous · Answer

how did you get the h= 36?

anonymous · Answer

some things error, the answer could be 30.1 degrees, says in the book

badmood · Answer

yeah my laptop laggs out some times

anonymous · Answer

angle sector in degrees, is that the working formula?

anonymous · Answer

how did we get the 30.1 degrees as the answer?