Quandaries
and Queries 

Question: A sphere with radius 5cm is inscribed in a right circular cone 20 cm in height.find (a) the base radius ,volume of the cone (b)volume of the shaded space( to 3 sig fig) 

Hi, I drew a diagram and labeled some points. Angle ABC is a right angle and since AC is tangent to the circle, angle OPA is also a right angle. Thus triangles AOP and ABC are similar. Now list some facts that you know.
Find BC Penny 

