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प्रश्न
In the given figure, two concentric circles of radii 6 cm and 10 cm are shown. The length of BC is ______.
पर्याय
8 cm
16 cm
12 cm
4 cm
MCQ
रिकाम्या जागा भरा
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उत्तर
In the given figure, two concentric circles of radii 6 cm and 10 cm are shown. The length of BC is 8 cm.
Explanation:
AP is a tangent to the inner circle, so OP⊥ AP. Using the tangent–radius property:
AB = `10^2 − 6^2`
AB = `sqrt64`
AB = 8 cm
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