Предмет: Математика, автор: niki232400gmailcom

4 завдання будь ласка

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Автор ответа: delomp

Периметр - сумма всех сторон. У квадрата все стороны равны и их 4.

2 6/7=20/7, 20/7:4=20/7:4/1=20/7*1/4 = 5/7 см - 1 сторона.

Площадь = 5/7*5/7=25/49 см^2

Ответ: В.

(Знак ^ степень).

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