Q: How do you find radius given diameter?

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The diameter of the semicircle will be twice the radius.

Divide the diameter by 2.

You times the radius by 2.

Divide the diameter by 2.

Diameter = circumference/pi Radius = circumference/2*pi

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I guess you mean:"How do you find the radius if you are given the diameter?"You take the diameter and divide it by 2.

the radius is half the diameter

The radius is half the diameter.

divide diameter by 2 = radius

The diameter of the semicircle will be twice the radius.

The radius is one half of the diameter. If the diameter is 20, the diameter is 10.

radius is half diameter...so divide diameter by 2!!!

you have multiplythe radius by 2 to get the diameter

Double the radius

Divide the diameter by 2.

To find diameter, multiply raduis by two.

You times the radius by 2.