Diameter = circumference/pi
Multiply the diameter by the constant pi.
You multiply the circle's diameter by 3.14 (Pi) to get the circumference.
Circumference of a circle: pi times diameter
To get the circumference of a circle first you have to find the diameter of the circle and multiply the diameter by Pi (3.14 in short). so it is the diameter * Pi.
pi times diameter
Diameter = circumference/pi
circumference of a circle = pi*diameter or 2*pi*radius
Pi x diameter
multiply the diameter times pi (3.14159265)
Multiply the diameter by the constant pi.
Pi is the number of times the diameter of a circle will fit into the circumference. Pi is not a circle, and does not have a circumference or area. To calculate a circumference USING pi, the circumference is diameter * pi. To find the area using pi, area = pi * radius * radius
You multiply the circle's diameter by 3.14 (Pi) to get the circumference.
To find area of a circle using diameter, you use this formuler. Area=pi(diameter/2)(diameter/2)
circ = 2 pi r = pi d
Most scientific calculators have a button for pi. So to find the circumference of a circle multiply pi by the diameter. If there is no pi button you can approximate pi as 3.14.
Circumference of a circle: pi times diameter