The radius of a circle A is 2 times as long as the diameter of circle B. What is the radius of circle B if the diameter of circle A is 64 inches?

The radius of circle A is half of its diameter, so the radius of circle A is 64/2 = 32 inches.

Since the radius of circle A is 2 times the radius of circle B, we can set up the equation:

32 = 2r

Where r is the radius of circle B.

Solving for r:

r = 32/2
r = 16

Therefore, the radius of circle B is 16 inches.