1. ширина прямоугольника на 22 см меньше его длины. найдите площадь прямоугольника, если его периметр равен 120 см.
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1
05.07.2019 15:50
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3
х=ширина
х+х+х+х+22+22=120
120-44=76
76:4=19
х=19
19*41=779 см-площадь