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8 inches; the diameter of a circle is twice its radius.

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Q: What is the diameter of circle if the radius is 4 inches?
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Related questions

A circle has a diameter of 4 inches what is its radius?

Two inches. The radius of a circle is 1/2 of the diameter.


If the radius of a circle is 2 inches what is the diameter?

its 4..... the radius of a circle is half of the diameter


What would be the radius of a circle with a diameter of 8 inches?

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.


What is the radius of a circle with a diameter of eight inches?

4 inches The radius of a circle is always half of its diameter (so 8in/2 = 4 in).


What is the diameter of a circle that has a radius of 4 inches?

The diameter is double the radius, so 8 inches.


Will a circle with a radius of 4 inches fit inside a circle with a diameter of 5 inches?

no because the radius is half the diameter so it must be multiplied by two in order to find the diameter of that circle which is 4 times 4 equals to 8 so the circle which has a diameter of 5 inches is much to small for a circle with a radius of 4 inches to fit.


If the diameter of a circle is 8 inches what is the circles radius?

The radius will be half the diameter of 8 inches which is 4 inches


What would be the radius of a circle with the diameter is 8 inches?

4 inches. The radius = 1/2 of the diameter


What would be the radius of the circle with diameter of 8 inches?

radius = 1/2 diameter = 4 inches


What would be radius of a circle with a diameter of 8 inches?

Radius = 1/2 diameter. So, if the diameter is 8", then radius of the circle is 4".


What is the radius of the circle with the diameter of eight inches?

4 inches


Define radius of a circle?

In order to fully understand what the radius of a given circle is, you must know the diameter. The diameter is the distance across the circle through the center. The radius of a circle is half the diameter. For example, if the diameter of a circle is 8 inches, then the radius would be 4 inches.