SOLUTION: A chord is 20 cm long and is 6 cm from the center.How long is the chord that is 4 cm from the center of the circle?

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Question 641259: A chord is 20 cm long and is 6 cm from the center.How long is the chord that is 4 cm from the center of the circle?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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A chord is 20 cm long and is 6 cm from the center.
How long is the chord that is 4 cm from the center of the circle?
:
If you draw this out you can see the radius Squared will be the hypotenuse of
half the chord(10cm), and 6 cm
r^2 = 10^2 + 6^2
r^2 = 136
:
"How long is the chord that is 4 cm from the center of the circle?"
this chord = 2%2Asqrt%28136-4%5E2%29 = 21.91 cm