What is the radius of this circle if the circumference is 18 pi cm? A circle. C = 18 pi cm 3 cm 9 cm 18 cm 36 cm

asked Mar 19, 2021 108k views

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Answer:

Explanation:

Mauro Gentile answered Mar 21, 2021

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1 vote

Answer:

9 cm

Explanation:

$\because \: C = 2\pi \: r \\ \\ \therefore \: 18\pi = 2\pi * r \\ \\ \therefore \: r = (18\pi)/(2\pi) \\ \\ \therefore \: r =9 \: cm$

Hence, radius of circle is 9 cm.

Bob Haslett answered Mar 24, 2021

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