It is 18 centimeters because your radius is exactly half of the diameter in any circle
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It's 18 cm. The radius is half the diameter of a circle. Half 36 cm is 18 cm.
The radius of a circle is half of its diameter.
the radius of a circle is half of its diameter.
it is half the diameter e.g 10cm diameter = 5 cm radius
Radius = 1/2 of diameter = 4 cm