Вопрос школьника по предмету Математика
периметр треугольника равен 270. Чему равна длина большей стороны этого треугольник,если известно отношение с сторон 3:4:5?
Ответ учителя по предмету Математика
пусть одна часть -х,тогда стороны треугольника равны 3х,4х и 5х, а периметр равен 3х+4х+5х=270
12х=270
х=270:12
х=22,5 это 1 часть
большая сторона это 5х=5*22,5=112,5
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