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SakuraAkanego
Answered

which of the following refers to "the circumference (C) of a circle is twice the product of the π and radius (r)?"
A. C = 2π + r
B. C = 2r + π
C. C = 2πr
D. C = 2π / r
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SOLUTION:

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[tex] \: \: \: \sf{\pi = \frac{Circumference}{Diameter} }[/tex]

Diameter = 2 × radius = 2r

Circumference = π × diameter

[tex] \: • \: \: \sf{\pi \times 2r}[/tex]

[tex] \: • \: \: \boxed{\sf{C = 2\pi r}}[/tex]

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ANSWER:

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Therefore, the answer is option C. C = 2πr.

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