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1. |
Two concentric circles of radii a and b, where \[a>b,\]are given. The length of a chord of the larger circle which touches the other circle is |
A. | \[\sqrt{{{a}^{2}}-{{b}^{2}}}\] |
B. | \[2\sqrt{{{a}^{2}}-{{b}^{2}}}\] |
C. | \[\sqrt{{{a}^{2}}+{{b}^{2}}}\] |
D. | \[2\sqrt{{{a}^{2}}+{{b}^{2}}}\] |
Answer» C. \[\sqrt{{{a}^{2}}+{{b}^{2}}}\] | |