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| Math Central | Quandaries & Queries |
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Question from girma, a student: one chord of a circle is 8cm long and it's distance from the center is 4cm long.what will be the length of another chord, of the same circle ,which is 2cm from the center |
Hi Girma,
Did you draw a diagram?
Use Pythagoras' theorem to find the radius r.
REdraw the circle with a chord that is 2 cm from the center. This time you know the radius so you can use Pythagoras' theorem again to find half the length of the chord.
Penny
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