The diameter of a circle is 18 cm. What is its radius?
Note
The radius is half of the diameter because the diameter passes across the full circle through the center. So radius = 18 ÷ 2 = 9 cm.
The diameter of a circle is 18 cm. What is its radius?
The radius is half of the diameter because the diameter passes across the full circle through the center. So radius = 18 ÷ 2 = 9 cm.