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Mathematics 22 Online
OpenStudy (anonymous):

a chord 18cm long contains the center of circle o. what is the radius of the circle?

OpenStudy (anonymous):

whats half of 18?

OpenStudy (anonymous):

is that really it? just 9?

OpenStudy (anonymous):

yup

OpenStudy (anonymous):

a chord that passes through the center of a circle is also known as the diameter

OpenStudy (anonymous):

radius = half of the diameter

OpenStudy (anonymous):

so that means half of 18

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