How To Work Out Circumference?

How do you find the circumference?

How to find the circumference of a circle:

  • The circumference of a circle can be found by multiplying pi ( π = 3.14 ) by the diameter of the circle.
  • If a circle has a diameter of 4, its circumference is 3.14*4=12.56.
  • If you know the radius, the diameter is twice as large.

How do you figure out diameter from circumference?

Solve the equation for the diameter of the circle, d= C/π. In this example, “d = 12 / 3.14.” or “The diameter is equal to twelve divided by 3.14.” Divide the circumference by pi to get the answer. In this case, the diameter would be 3.82 inches.

What is the circumference of a 10 inch circle?

Circumference & Areas

Size in Inches Circumference Inches Area in Square Inches
10 1/4 32.200 105.060
10 1/2 32.990 110.250
10 3/4 33.770 115.560
11 34.560 121.000

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