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PA and PB are two tangents drawn to two cricles of radius 3 cm and 5 cm respectively. PA touches the smaller and larger circles at points X and Y respectively. PB touches the smaller and large circle at point U and V respectively. The centres of the smaller and larger circles are O and N respectively. If ON=12 cm, then what is the value (in cm) of PY?
PA तथा PB क्रमश, 3 सेमी. तथा 5 सेमी. वाले दो वृत्तों पर स्पर्श रेखाएँ बनाई गई है। PA छोटे तथा बड़े वृत्त को क्रमशः X तथा Y बिन्दु पर स्पर्श करते है। PB छोटे तथा बड़े वृत्त को U तथा V बिंदु पर स्पर्श करती है। O तथा N क्रमश: छोटे तथा बड़े वृत्त के केन्द्र हैं। यदि ON=12 सेमी. है, तो PY का मान (सेमी. में) क्या है?

A

`5 sqrt35`

B

`7 sqrt15`

C

`9 sqrt15`

D

`12 sqrt5`

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CHAMPION PUBLICATION-2017 TIER-II PAPER(13)-EXERCISE
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  2. Centre of two concentric circles is O. The area of two circles is 616c...

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  3. PA and PB are two tangents drawn to two cricles of radius 3 cm and 5 c...

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  14. If sin(A-B) =1//2 and cos(A+B)=1//2, then what is the value of sinA co...

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  15. In a club there are 12 wrestlers. When a wrestlers whose weight is 90k...

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  18. A solid cuboid has dimensions 14cmx18cmx24cm. A hemisphere of radius 3...

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  19. Which of the following statement(s) is/are true? निम्नलिखित में से क...

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  20. O is the centre of the circle. A tangent is drawn which touches the c...

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