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OpenStudy (anonymous):
What is the circumference of a circle with a diameter equaling 5 centimeters in length? Use 3.14 for π. choices: 7.85 cm 15.7 cm 21.98 cm 31.4 cm
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OpenStudy (anonymous):
15.7? right
OpenStudy (kainui):
Pi is the ratio of a circle's diameter to its circumference. So like any ratio, for every amount of diameter, just multiply it by pi and that's how much circumference you'll have.
OpenStudy (kainui):
15.7 is right yeah.
OpenStudy (anonymous):
Thank you!
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