queenjay2015 queenjay2015

03-04-2016
Mathematics

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

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penfila11Pen penfila11Pen

03-04-2016

The circumference of a circle=2[tex] \pi [/tex]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=[tex] \pi [/tex]d
The 2r cancels out

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