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OpenStudy (anonymous):
The radius of a circle measures 20 centimeters. What is the length of its diameter? 5 cm 10 cm 20 cm 40 cm
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OpenStudy (anonymous):
\[ diameter = 2\times radius \]
OpenStudy (anonymous):
They are asking you to multiply.
OpenStudy (anonymous):
d. The diameter is double the radius, where the radius is the distance from the center of the circle to the circumference. The radius is 20, so the diameter is40.
OpenStudy (anonymous):
\[ diameter = radius + radius \]
OpenStudy (anonymous):
Or maybe they are asking you to add.
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OpenStudy (anonymous):
OK. Thank you.
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