Предмет: Математика, автор: Васёк2221

номер 11 , 13 , зделайте пожалуйста в тетрадь

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Автор ответа: тто

1)S=12cм*3см=36 см в кв
2)S=9см*4см=36 см в кв
3)S=18см*2см=36 см в кв
======================
1) Р=(12+3)*2=30 см
2) Р=(9+4)*2=26 см
3) Р=(18+2)*2=40 см
========================

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