I assume you want the formula for finding the circumference of a circle with a known diameter?
The formula is C = pxd
C = Circumference
p = Pi (3.14)
d = Diameter
For example: with a diameter of 6 : 3.14 x 6 = 18.84
Multiply the diameter by pi.
To find the diameter of a circle you multiply the radius by 2 or d=r2
Circumference of a circle: pi times diameter
diameter*pi = circumference
you multiply the diameter by pi.
You multiply the diameter by pi (3.14) and u find the diameter
To find diameter, multiply raduis by two.
Multiply the diameter by pi.
To find the diameter of a circle you multiply the radius by 2 or d=r2
Circumference of a circle: pi times diameter
diameter*pi = circumference
you multiply the diameter by pi.
Multiply pi by the diameter.
To find the diameter, you just multiply the radius by two.
you can multiply the diameter by pie to find the circumference
Multiply by 2 ! A radius is half a diameter !
multiply by 2