Предмет: Геометрия, автор: fhjdfhfd

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Одна из сторон треугольника равна 20 см, вторая сторона на 15 см больше первой, а третья сторона в 2 раза меньше второй. Найдите периметр треугольника

Ответы

Автор ответа: voldol

1

Ответ:

135

Объяснение:

20+15=35(вторая сторона)

35÷2=17,5(третья сторона)

(20+35+17,5)*2=135(периметр)

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