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You use the information that you do have, and a formula that relates it to theradius or diameter of the circle. As an example: The circumference is very helpfulif you know it.
The formula is 2pie(radius).
radius = 1/2 diameter
3.14 times the radius times 2
To find the circumference of a circle the formula is: 2*pi*radius or diameter*pi
Circumference = (2) x (pi) x (radius)
You use the information that you do have, and a formula that relates it to theradius or diameter of the circle. As an example: The circumference is very helpfulif you know it.
The circumstance of a circle is 2 x pi x radius. I.e.: if the circle has a radius of 6, the circumstances 12×π which is 37.6991118432
radius = diameter/2
radius = diameter/2.
The formula is 2pie(radius).
The formula for the area of a circle is pi times the radius squared. The formula for the circumference of a circle is two times pi times the radius.
It is: 2*pi*radius
Well to find the radius it is diameter/2.
A radius is a line segment. It has no area.
Diameter = 2*Radius
Radius, "R" = D/2 where D=Diameter.