September 2021 0 8 Report
Основания трапеции равны 10 и 5, а диагонали 9 и 12. Найдите площадь трапеции. Ответ знаю , мне надо чтоб вы решили задачу на подобие : (9+12+15):2=18 и √(18*9*6)=54см2
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