SOLUTION: Two concentric circles have radii of 16 cm and 34 cm. Find the length of the chord of the larger circle that is tangent to the smaller circle.

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Question 874871: Two concentric circles have radii of 16 cm and 34 cm. Find the length of the chord of the larger circle that is tangent to the smaller circle.
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Did not do it yet, but here is a strategy using coordinate geometry.

Two circles centered at the origin.
Small, x%5E2%2By%5E2=16%5E2
Large, x%5E2%2By%5E2=34%5E2

The tangent chord is at y=16, positioned horizontally with slope zero. Use this to get the x value for the points on the larger circle. Distance from the left x value to the y x value is the length of the tangent chord.