Предмет: Математика, автор: znanijacom86b

Сторона треугольника равная 6,3,на2,8 см меньше второй стороны и на 0,9 см больше третьей стороныНайдитепериметр треугольника

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Автор ответа: v1m1v

0

вторая сторона 6.3+2.8=9.1
третья сторона 6.3-0.9=5.4
периметр =9.1+5.4+6.3=20.8

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