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Mathematics 10 Online
OpenStudy (anonymous):

The radius of a circle measures 20 centimeters. What is the length of its diameter?

OpenStudy (mathmale):

How are the radius and the diameter related? This fact is important to know.

OpenStudy (anonymous):

I don't know. I just don't understand it. You don't have to answer it for me. All the question said was: The radius of a circle measures twenty centimeters. What is the length of its diameter? 5 cm 10 cm 20 cm 40 cm

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