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Q: How can you use radius to find the diameter?

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divide the diameter by 2! doy!

diameter = 2*radius

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.

The radius is half the diameter.

the radius is half the diameter

the radius is half the diameter

Yes, the radius is half of the diameter, therefore the diameter is twice the radius.

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

The diameter is twice the radius. So multiply the radius by 2

circumference = pi * 2radius (diameter) so to find radius you use circumference/(2 x pi) this will find radius ----

Diameter = radius * 2 Circumference = pi * diameter.

The radius is half the diameter.

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