If the radius of a sphere is 5 inches, which of the following is true? (1 point)
O The center of the sphere is 2.5 inches away from the surface of the sphere.
The center of the sphere is 10 inches away from the surface of the sphere.
O The diameter of the sphere is 10 inches.
O The diameter of the sphere is 15 inches.
The diameter of the sphere is 10 inches.
Explanation: The diameter of a sphere is equal to twice the radius, so if the radius is 5 inches, the diameter is 2 x 5 = 10 inches.