What is the measure of ∠r ?

enter your answer as a decimal in the box. round only your final answer to the nearest hundredth.
m∠r= °

Franco wants to double the volume of the cone. what should he do?

Given a circle with measures of (c, d, and r) and a circle with measures of (c', d', and r'), what is d if c c' = 12 and d' = 0.50? a) 3 b) 6 c) 12 d) 24

In the diagram of circle a what is m