To find the circumference of a circle, multiply the diameter by Pi. Pi is written as 3.14 or just use the Pi button on a calculator. You could also write something to the effect of 3pi.
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Circumference of a circle:Formula= diameter * pi (approx 3.14)
the formula for pi is the ratio of the circumference of a circle to the diameter of the circle
Circumference = (diameter) multiplied by (pi)
To find the radius of a circle when given the circumference, you can use the formula for the circumference of a circle: C = 2πr, where C is the circumference and r is the radius. Given that the circumference is 132 cm, you can plug this value into the formula: 132 = 2πr. To solve for the radius, divide both sides by 2π: r = 132 / (2π) ≈ 21 cm. Therefore, the radius of the circle is approximately 21 centimeters.
Divide the circumference by 2*pi because 2*pi*radius = circumference