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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.
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Define pi and write a brief history of pi?
pi is the ratio between the radius and the circumference of the circle if the radius is 1 the circumference is pi
Does The locus of points idea allows you to define a circle without giving a numerical value for the radius?
Yes
What does the r in the circumference formula?
The variable r in geometry equations referrs to the radius. The radius is the distance between the center of the circle and its edge, such that 2 x r = d where d = diameter (width). You can define the size or volume of a circle or sphere simply by knowing its radius.
What is the radius of a circle where d is the diameter of the circle?
the radius of a circle is r
Wha is the radius of a circle?
The radius of a circle is half the circle's diameter
