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Mathematics 10 Online
OpenStudy (sherreraglx0):

Circle A and circle B are congruent. mc031-2.jpg is a chord of both circles. If AB = 24 in. and the radius is 13 in., how long is mc031-3.jpg?

OpenStudy (mathmate):

|dw:1464179655024:dw| A diagram would surely help understand the question. With reference to the diagram, DD' is the length of the common chord. Using Pythagoras Theorem, find the value of x. mDD' is twice of x, by symmetry.

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