Question

If the radius of a circle is 1.5 in., how long is the diameter?
Answer
that was right!
Answered by GPT 3.5
The diameter of the circle is twice the length of the radius. So, the diameter of the circle with a radius of 1.5 in. is:

Diameter = 2 * Radius
Diameter = 2 * 1.5 in.
Diameter = 3 in.

Therefore, the diameter of the circle is 3 inches.