If the diameter of a wheel is 10 inches. What is the radius and how would I find its circumference. Thanks I do understand that the radius is twice the circumference.

Not quite!!

The diameter is twice the radius, and the circumference is π * diameter, or equivalently, 2&pi * radius.

To find the radius of a wheel, you need to divide the diameter by 2. In this case, the diameter is 10 inches, so the radius would be 10/2 = 5 inches.

To find the circumference of a circle, you can use the formula: C = 2πr, where C represents the circumference and r represents the radius.

So, for the given wheel with a radius of 5 inches, the circumference can be calculated as follows:

C = 2πr
C = 2 * π * 5
C ≈ 31.42 inches

Therefore, the circumference of the wheel is approximately 31.42 inches. Note that the claim you made about the radius being twice the circumference is incorrect; rather, the diameter is twice the radius.