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slavikrds [6]
3 years ago
13

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

Mathematics
2 answers:
nirvana33 [79]3 years ago
7 0

Answer:

the answer is 9 cm

Step-by-step explanation:

Afina-wow [57]3 years ago
6 0

Answer:

9 cm

Step-by-step explanation:

\because \: C = 2\pi \: r \\  \\  \therefore \: 18\pi = 2\pi \times r \\  \\ \therefore \: r =  \frac{18\pi}{2\pi}  \\  \\ \therefore \: r =9 \: cm

Hence, radius of circle is 9 cm.

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