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Centre of two concentric circles is O. T...

Centre of two concentric circles is O. The area of two circles is `616cm^2` and `154 cm^2` respectively. A tangent is drawn through point A on the larger circle to the smaller circle. This tangent touches small circle at B and intersects larger circle at C. What is the length (in cm) of AC?
दो संकोंद्रत वृत्त का केन्द्र O है| दोनों वृत्तों का क्षेत्रफल 616 `सेमी.^2` तथा- 154 `सेमी.^2` है। बडे वृत्त के बिंदु A से छोटे वृत्त पर एक स्पर्श-रेखा खोची गई है यह स्पर्श रेखा छोटे वृत्त को बिंदु B पर स्पर्श करती है तथा बड़े वृत्त को बिंदु C पर प्रतिच्छेद करती है । AC की लम्बाई (सेमी. में) क्या है?

A

`12 sqrt3`

B

`14 sqrt3`

C

`10 sqrt3`

D

`18 sqrt3`

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CHAMPION PUBLICATION-2017 TIER-II PAPER(13)-EXERCISE
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