Предмет: Алгебра, автор: 666SLIPKNOT666

Периметр прямоугольника 14 см а его диагональ 5см Найдите его стороны

Ответы

Автор ответа: valya212121

система двух уравнений:
2a+2b=14, поскольку периметр - это сумма длин всех сторон, а у прямоугольника стороны попарно равны.
a^2+b^2=5^2 - за теоремой Пифагора.
реши систему=)

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