To get the radius just divide the diameter by 2.
so, 10/2 = 5 cm
Chat with our AI personalities
10cm
20 cm
it is half the diameter e.g 10cm diameter = 5 cm radius
radius = diameter ÷ 2 ⇒ radius = 10 cm ÷ 2 = 5 cm
The diameter of a 10 cm wide circle is 10 cm. The diameter is just how wide it is. The radius is 1/2 X diameter. 1/2 X 10cm = 5 cm.