If the angle of intersection at a point where the two circles with radii 5 cm and 12 cm intersect is 90o, then the length (in cm) of their common chord is :

Question

If the angle of intersection at a point where the two circles with radii 5 cm and 12 cm intersect is 90^o, then the length (in cm) of their common chord is :

${{13} \over 5}$

${{60} \over {13}}$

${{120} \over {13}}$

${{13} \over 2}$

Solution

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