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
diameter*pi = circumference
you multiply the diameter by pi.
Circumference of a circle: pi times diameter
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.
Multiply by 2 ! A radius is half a diameter !
you can multiply the diameter by pie to find the circumference
multiply by 2