SOLUTION: a chord of a circle radius 17cm is8cm from the centre of the circle .what is the length of the chord

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Question 271118: a chord of a circle radius 17cm is8cm from the centre of the circle .what is the length of the chord
Answer by Greenfinch(383) About Me  (Show Source):
You can put this solution on YOUR website!
Consider the right angled triangle.
hypoteneuse is 17 cm.
Chord is 8 cm from centre of circle, so length of side is 8 cm
Third side is sqrt 17^2 - 8^2 = 225 = 15^2
So length of the sine is 15 and the length of the chord is double that or 30 cm.