Площадь прямоугольного треугольника равна 63 квадратных см , а одна из сторон , образующих прямой угол , равна 21 см . найдите вторую сторону этого угла.
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1)the teacher asked nina if she lived far from the school. 2)ann told harry not to take her ruler and use his one 3)my friend asked me if i had finished reading his book 4)my mother asked me why i was looking pale and what the matter was. 5)he asked me to speak more slowly because he couldn't understand
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