The circumference of a circle is (pi) x (diameter), or (2 pi) x (radius).
Circumference of a circle = diameter*pi Diameter of a circle = circumference/pi
The area sector of a circle needs pi to work it out.
Twice the radius times pi or the diameter times pi
Any circle will work!
The circumference of a circle is (pi) x (diameter), or (2 pi) x (radius).
It is the ratio of the circumference (C) and the diameter (D) of a circle. Using pi and the diameter of a circle, you can work out the circumference.
Circumference of a circle = diameter*pi Diameter of a circle = circumference/pi
It is pi r 2
Pie/pi
The area sector of a circle needs pi to work it out.
Twice the radius times pi or the diameter times pi
Any circle will work!
Pi times the square of the radius.
It is: (pi*radius2)/4
-- enter the diameter of the circle-- hit the big ' X ' for "times"-- enter (pi) with the pi button-- touch " = " ('equals')The circumference is displayed.
The circumference of a circle is the distance around the circle. The formula is: C = pi * d (where pi = 3,1416 and d is the diameter) The diameter of a circle is the distance across the circle. The radius of a circle is one-half of the diameter The area of the circle is the amount of space contained within the circle. To calculate, the formula is: A = pi * r-squared (where pi = 3.1416 and r-squared is the radius multiplied by itself)