Предмет: Математика, автор: DiankaMaksimikhina

ПОМОГИТЕ, ПОЖАЛУЙСТА!
Запиши в таблице, какими могут быть длины двух разных сторон прямоугольника, если его периметр равен 20 см.
ПОМОГИТЕ, ПОЖАЛУЙСТА!

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Ответы

Автор ответа: m46patton2013
0
Р=2(а+б). 20:2=10. А+б=10 а=2 б=8 или 4 и 6
Автор ответа: elenica2000
0
периметр=20см, поэтому сумма двух сторон = 20:2 = 10 см
и таблица сложения на 10:
1+9
2+8
3+7
4+6
5+5
Автор ответа: DiankaMaksimikhina
0
Спасибо!
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