They are all related to circles
Circumference = pi * diameter = 2 * pi * radius
Diameter = circumference/pi Radius = circumference/2*pi
If you have the circumference: circumference = (pi) * diameter diameter = circumference / (pi) If you have the area: area = (pi) * radius * radius radius = square_root(area / pi) radius = diameter / 2 diameter = 2 * square_root(area / pi)
Circumference is pi times diameter. Diameter is circumference divided by pi. Diameter is twice the radius. Radius is half the diameter.
Diameter = radius * 2 Circumference = pi * diameter.
Circumference = pi*diameter or 2*pi*radius
Circumference = 2*pi*Radius Diameter = 2*Radius Circumference = pi*Diameter
pi = circumference/diameter circumference = pi*diameter or 2*pi*radius
Circumference = Diameter multiplied by Pi Diameter = Circumference divided by pi Radius = Diameter divided by 2.
circumference of a circle = 2*pi*radius or pi*diameter
Circumference of a circle = 2*pi*radius or diameter*pi
circumference of a circle = pi*diameter or 2*pi*radius
Radius is diameter divided by two. Diameter is radius times two or circumference divided by pi. Circumference is diameter times pi. Pi is roughly 3.14