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Re: The circles shown are tangent at point B. Point A is the ce [#permalink]
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Even though I like both the above methods, the technique I prefer is this. Area of big circle = pi*r^2. Area of small circle = pi*(r/2)^2= pi*r^2/4. i took less times using this. I guess the way everyone practices and has learned their basics matters with such techniques. So till our techniques are right and quick, its all good.
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Re: The circles shown are tangent at point B. Point A is the ce [#permalink]
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Re: The circles shown are tangent at point B. Point A is the ce [#permalink]
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