Скачать или смотреть একটি সমদ্বিবাহু ত্রিভুজের সমান বাহুদ্বয়ের প্রতিটি 10 সেমি, অন্তবর্তী কোণ 45° হলে, তার ক্ষেত্রফল কত?

একটি সমদ্বিবাহু ত্রিভুজের সমান বাহুদ্বয়ের প্রতিটি 10 সেমি এবং অন্তবর্তী কোণ 45° হলে, তার ক্ষেত্রফল কত বর্গসেমি ?
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