Asked by kuku

A chord,distance 2 cm from the centre,of a circle is 18 cm long.calculate the length of a chord of the same circle which is 6cm from the centre.

Answers

Answered by Steve
r^2 = 2^2+9^2 = 85

so, if the unknown chord is 2x in length,

6^2+x^2 = r^2
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