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OpenStudy (anonymous):

You know the area of this crater is A=9π km​2​​. What is the circumference (C) of the crater?

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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