Question

How do we calculate the radius of the ball ?

Answer 1

Radius r = 11.5cm

Explanation:

In the picture you have a diameter of d = 23 cm.

The diameter is twice the radius: d = 2r.

Therefore, r = d : 2 → r = 23 cm : 2 = 11.5 cm

Answer 2

11.5 (i think)

Explanation:

23 is the diameter and half of the diameter is the radius so 23 divided by 2 is 11.5.