problem of nmo 2010 secondary

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problem of nmo 2010 secondary

Unread post by chironjib07 » Mon Feb 07, 2011 2:56 pm

:?: :?: :?: ABC সমদ্বিবাহু ত্রিভুজে B কোনটি সমকোণ এবং AB=3।এর যেকোন শীর্ষকে কেন্দ্র করে একটি একক ব্যাসার্ধের বৃত্ত আকা হল।ত্রিভুজের যে অংশ বৃত্তের অর্ন্তভূক্ত নয় তার সবোচ্চ ক্ষেত্রফল বের কর।
solution ta kemon hobe seta ki kau help korben????

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Re: problem of nmo 2010 secondary

Unread post by Zzzz » Mon Feb 07, 2011 3:06 pm

moved the topic. please choose the right forum for posting problems (read about the rules here)
Every logical solution to a problem has its own beauty.
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Re: problem of nmo 2010 secondary

Unread post by Hasib » Mon Feb 07, 2011 4:44 pm

first guess which circle would have the larges area. Then, evalute the angle measurment. Then, let it be $\theta$. Now, this angle create a area which vertex is the centre of the circle. Use the formula now:
area$=(\pi r^2)\times \frac{\theta}{360}$
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