There are 2 concentric circles of radii 13 cm and 12 cm. Then the length of the chord of the outer circle which
touches the inner circle is___
Kindly refer the similar link for your query.
https://www.meritnation.com/ask-answer/question/two-concentric-circles-are-of-radii-5-cm-and-3-cm-find/circles/6294139
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https://www.meritnation.com/ask-answer/question/two-concentric-circles-are-of-radii-5-cm-and-3-cm-find/circles/6294139
Regards