Circumference = (diameter) multiplied by (pi)
The circumference of a circle is given by Circumference = pi x diameter. The area of a circle is given by Area = pi/4 x diameter2. Thus for a circle with circumference c = 12 in. The area will equal a = 11.459 in2.
If the circumference or diameter is given then you can find the radius or simply measure the distance from the centre of the circle to the circumference.
If the dimension given is the diameter, use the formula C = Pi x D where Pi is 3.1416 and D is the diameter: C = Pi x D C = 3.1416 x 7 C = 21.9912
The circumference of a circle is the perimeter of the circle for a given diamater.
The circumference of a circle is pi times the diameter. Most people, especially students should remember the value of pi. Having given these clues do you think you can find the circumference. I am sure you can. Good luck!
If you are given the radius of the circle, you can use the formula: diameter = 2*radius If you are given the circumference of the circle, you can use the formula: diameter = circumference/pi
Circumference of a circle = (pi) x (diameter)
C=Pi x diameter
The circumference, C, of a circle is given by the formula
diameter = circumference/pi (pi = 3.14159265 or 3.14 for rough approximation).
(pi)D
Given a circle with a diameter of 4, the circumference is: 12.6 (diameter x Pi = circumference).
To find the circumference of a circle the formula is: 2*pi*radius or diameter*pi
Diameter of a circle = circumference/pi
When you are given the circumference of a circle asked to find the diameter, divide the circumference by pi. The formula for circumference is pi x diameter, so the formula for diameter is circumference divided by pi. So 7 divided by pi equals about 2.22.
Circumfrence=diameter X 3.14 (diameter=2 X radius)
Divide the circumference by pi (about 3.1416). The result is the circle's diameter.