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OpenStudy (anonymous):
You know the area of this crater is A=9π km2. What is the circumference (C) of the crater?
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OpenStudy (anonymous):
10.63 I beleive
OpenStudy (mendicant_bias):
Do you want to understand how to do this, @chachbenjamin354 ?
OpenStudy (anonymous):
Area of circle = pi * r^2 which is given in the question from area find radius. then use C = 2 * pi* r for circumference
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