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A secant PAB is drawn from an external point P to the circle with centre O, intersecting it at A and B. If OP = 17cm, PA = 12cm and PB = 22.5 cm, then the radius of the circle is :
एक छेदक PAB को बाहरी बिंदु P से केंद्र O वाले वृत्त की ओर खींचा जाता है,जो A और B पर प्रतिच्छेदित करती है । यदि OP = 17 सेमी, PA = 12 सेमी और PB = 22.5 सेमी है, तो वृत्त की त्रिज्या क्या है

A

`sqrt 19 cm`

B

`sqrt 17 cm`

C

`3 sqrt 2 cm`

D

`2 sqrt 3 cm`

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In the given figure, TB is a chord which passes through the centre of the circle. PT is a tangent to the circle at the point. T on the circle. If PT = 10 cm, PA = 5 cm and AB = x cm, then the radius of the circle is: दिए गए चित्र में, TB एक जीवा है जो वृत्त के केंद्र से होकर गुजरता है। PT, वृत्त के बिंदु T पर वृत्त की स्पर्शरेखा है। यदि PT= 10 सेमी, PA=5 सेमी और AB = x सेमी, तो वृत्त का त्रिज्या है

In a circle, AB is the diameter and CD is a chord. AB and CD produced meet at a point P, outside the circle. If PD = 15.3 cm, CD = 11.9 cm and AP = 30.6 cm, then the radius of the circle is: एक वृत्त में, AB व्यास है तथा CD एक जीवा है | AB तथा CD को बढ़ाया जाता है जो वृत्त से बाहर एक बिंदु P पर मिलती हैं | यदि PD = 15.3 सेमी, CD = 11.9 सेमी तथा AP = 30.6 सेमी है, तो वृत्त की त्रिज्या कितनी है ?

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Let PAB be a secant to a circle intersecting the circle at A and B. Let PT be the tangent segment. If PA = 9 cm and PT =12 cm, then what is AB equal to?

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