3 years ago

Which expression represents the circumference of a circle when r is the radius and d is the diameter of the circle?

1 answer:

4 0

Circumference = 2πr or πd

The formula for circumference is 2πr (2 times pi times the radius)
2r = d (The radius x 2 = the diameter), so the circumference also = πd (pi times the diameter)

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