Предмет: Математика, автор: Аноним

Из куска проволоки надо сделать карксы треугольной пирамиды и куба.Каждое ребро этих фигур равно 10 см.Какой длины проволоку для изготовления каждой фигуры надо взять?

ПОМОГИТЕ ПОЖАЛУЙСТА СРОЧНО!!!!УМОЛЯЮ

Ответы

Автор ответа: SerjMAN

205

Предполагаю, что каркасом будет периметр фигур. Периметр = сумме всех сторон. У треугольной пирамиды их 6, а у куба - 12.

6 * 10 = 60 см - периметр треугольной пирамиды

12 * 10 = 120 см - периметр куба

Ответ : для изготовления каркаса треугольной пирамиды потребуется 60 см проволоки, а для изготовления каркаса куба - 120 см.

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