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Q: How do you find the radius of a circle when the diameter is known?

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the radius is half the diameter

Radius is one-half of the diameter of a circle. Therefore, the radius of an eight-inch diameter circle is four inches. The diameter of a circle is a straight line joining a point on the circumference through the centre to the 'opposite' point on the circumference.

When you have the radius of a circle and you are trying to find the diameter, multiply the radius by two; the answer is the diameter. If you have the diameter and want to find the radius, divide the diameter by two; the answer will be the radius. The diameter is 54 centimeters.

Diameter = 2*Radius

The radius is half the diameter.

diameter is 2 times the radius 24

The diameter of a circle is simply twice the radius of the circle. The radius is a line that starts from the center of the circle to the circumference of the circle. The diameter is a line that passes through the circle. diameter=2xradius

radius = diameter/2

The radius of a circle is half of the diameter. Radius= Diameter divided by 2

It is twice the radius of a circle

Area of Circle = pi (radius)2 So , using this formula we can find the radius and also the diameter. Diameter = 2(radius)

Radius is half of the diameter

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