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OpenStudy (anonymous):
how to solve? If a chord 10 inches long is 5 inches from the center of a circle, find the radius of the circle.
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OpenStudy (anonymous):
isn't it five sq root of ___?
OpenStudy (anonymous):
okay... thanks.
Directrix (directrix):
|dw:1332391407456:dw| The answer is 5 times square root of 2. I'll draw a diagram that will show the results of two theorems: A segment through the center of a circle that is perpendicular to a chord bisects the chord. (the perpendicular part comes from distance from a point to a segment being perpendicular distance unless otherwise stated) and the 45-45-90 theorem.
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