Q: How do you find the diameter of a semicircle when radius is given?

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To find the perimeter of the curved section of the semi-circle: Perimeter of semicircle = Pi x radius If you also need to the find the perimeter of the straight part of the semicircle (the diameter), it is simply double the radius.

A semicircle is 1/2 of a circle. Find the area with the diameter you are given as if you had a whole circle, then divide that answer by 2 to get the area of the semicircle.

Divide the diameter by 2.

You times the radius by 2.

Divide the diameter by 2.

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it is have the diameter

To find the perimeter of the curved section of the semi-circle: Perimeter of semicircle = Pi x radius If you also need to the find the perimeter of the straight part of the semicircle (the diameter), it is simply double the radius.

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.

A semicircle is 1/2 of a circle. Find the area with the diameter you are given as if you had a whole circle, then divide that answer by 2 to get the area of the semicircle.

divide diameter by 2 = 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.