The relationship between the radius and the diameter of a circle is that: radius = diameter /2
The radius is half the diameter of a circle.
The radius is excatly half of the diameter
Circumference = 2*pi*Radius Diameter = 2*Radius Circumference = pi*Diameter
The diameter of a circle if twice the length of the radius.
The radius is half the diameter.
By pattern, I'm assuming you mean relationship. The radius is half the length of the diameter.
The diameter of any circle is twice its radius
The radius is half the diameter.
If you have a physical cylinder to measure, measure the "width" of the circle that is the cross section of the cylinder. That is the diameter, Half the diameter is the radius.
When d=diameter and r=radius d=2r or r=1/2d
it doesn't-__-