Предмет: Математика, автор: nata06372

Одна сторона трикутника 15 см, друга – в 3 рази довша за першу і на 11 см коротша за третію сторону. Обчислити пери метр трикутника.

Ответы

Автор ответа: ludmilaksenija2005

3

Пошаговое объяснение:

1 сторона =15 см

2 сторона =3×15=45 см

3 сторона=45+11=56 см

Р=15+45+56=116 см

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