the circumference of the circle divided by pi (button or 3.14) - Maths
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circumference of a circle = pi * diameter.
Circumference of a circle = pi*diameter or 2*pi*radius
To find the circumference of a circle when given the diameter, you can use the formula C = πd, where C is the circumference, π is pi (approximately 3.14159), and d is the diameter. Given the diameter of 84cm, you can plug this into the formula to get C = 3.14159 * 84 = 263.893cm. Therefore, the circumference of the circle is approximately 263.893cm.
use the formula pi*diameter = circumference and the formula diameter = 2*radius and combine them 2pi*radius = circumference now you have a formula that you can just plug you numbers into. if you have 3 as your radius, then this is how to find the circumference 2pi*3=circumference 6.28*3=circumference 18.84=circumference
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