Solid 3Dhard
0:00.0
A right circular cone has a base radius of and height . A plane cuts the cone parallel to the base such that the lateral surface area of the smaller cone removed is exactly half of the lateral surface area of the original cone. What is the height of the smaller cone?
A right circular cone has a base radius of and height . A plane cuts the cone parallel to the base such that the lateral surface area of the smaller cone removed is exactly half of the lateral surface area of the original cone. What is the height of the smaller cone?