3 years ago

51) Rewrite the formula for the circumference of a circle C=2 /pi "r" in terms of its diameter "d". Please show your working :)

1 answer:

3 0

The circumference of a circle=2 $\pi$ r
We know that diameter is double the radius, and therefore can be written as d=2r
Circumference of a circle in terms of diameter is C= $\pi$ d
The 2r cancels out

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