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Paraphin [41]
3 years ago
6

The formula for the circumference of a circle is C = 2r. What is one-fourth of the circumference of a circle that measures 12 ce

ntimeters around? If necessary, use 3.14 for .
Mathematics
1 answer:
Harman [31]3 years ago
5 0

The formula of a circumference is:

C=2\pi r

r - radius

or

C=d\pi

d - diameter

We have d = 12cm. Substitute:

C=12\pi\ cm

One-fourth of the circumference:

\dfrac{1}{4}C=\dfrac{1}{4}\cdot12\pi=3\pi\ cm\approx3\cdot3.14=9.42\ cm

<h3>Answer:  9.42 cm.</h3>
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