From a point Q, the length of the tangent to a circle is 24 cm and the distance of Q from the centre is 25 cm. The radius of the circle is
(a) 7 cm
(b) 12 cm
(c) 15 cm
(d) 24.5 cm
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Answer:
Justification,
Let OT be x cm
Then in right ∆ QTO,
QO² = QT² + OT²
( By Pythagoras theorem )
→ ( 25 )² = ( 24 ) ² + x²
→ x² = 625 – 576 = 49
→ x = √49 = 7cm
→ 7cm
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Answer:
dkdjhhfjejx the same of a b a
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