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12 February, 15:18

Two concentric circles have radii 6 and 14. Find the length of a chord of the larger circle that is tangent to the smaller circle.

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  1. 12 February, 18:44
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    Step-by-step explanation:

    let 2x be the length of chord tangent to first circle.

    so x=√ (14²-6²) = √ (14+6) (14-6) = √ (20*8) = √160=4√10

    length of chord=2x=2*4√10=8√10
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