The radius of a circle is equal to 1/2 of it's diameter. radius is one half of the diameter. Therefore ; r = (1/2) D
multiple the diameter by 2 to get the radius, then use your equation and go from there
The radius is half the diameter.
the radius is half the diameter
Radius = Diameter/2.
divide diameter by 2 = radius
Radius of a circle = diameter/2
you have multiplythe radius by 2 to get the diameter
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 equation for the circumference of a circle is 2*radius*pi, or since the radius is half of the diameter 2*radius=diameter, we can simplify the equation to the circumference of a circle=diameter*pi
The radius is one half of the diameter. If the diameter is 20, the diameter is 10.
The diameter by definition because a diameter of a given object is twice its radius.
radius is half diameter...so divide diameter by 2!!!