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Level 84

Circumference


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radius
From center to a point on the circle.
diameter
A straight line passing through the centre of a circle to touch both sides of the circumference.
Circumference
2πr
Center
Each regular polygon has a center because it can be inscribed in a circle.
Circle
in a plane, the set of all points equidistant from a given point
pi
Pi is the formula for how to find the circumference
C=pid
Formula for circumference of a circle
C= 81.92 inches
Find the circumference of a circle with a diameter of 28 in. Use 3.14 for pi
C= 16.014 feet
Find the circumference of a circle with a diameter of 5.1 feet