Gujarati
10-1.Circle and System of Circles
medium

यदि समान त्रिज्याओं $a$ व केन्द्र $(2, 3)$ व $(5, 6)$ वाले वृत्त एक-दूसरे को लम्बवत् काटते हैं, तो $a =$

A

$1$

B

$2$

C

$3$

D

$4$

Solution

(c) ${({C_1}{C_2})^2} = r_1^2 + r_2^2 $

$\Rightarrow 2{a^2} = 18$

$\Rightarrow a = 3$.

Standard 11
Mathematics

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