SOLUTION: A chord16cm long is 6cm away from the centre of a circle.calculate the radius o

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Question 1141574: A chord16cm long is 6cm away from the centre of a circle.calculate the radius o
Answer by ikleyn(52781) About Me  (Show Source):
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A chord 16 cm long is 6 cm away from the highlight%28cross%28centre%29%29 center of a circle. calculate the radius o
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1)  Make a sketch.


2)  Find a right angled triangle in it.


3)  Then apply the Pythagorean theorem.


ANSWER.  The radius =  sqrt%286%5E2+%2B+%2816%2F2%29%5E2%29 = sqrt%286%5E2+%2B+8%5E2%29 = sqrt%2836+%2B+64%29 = sqrt%28100%29 = 10 cm.

Solved.