Предмет: Математика, автор: Аноним

Помогите! номер 186 второй вопрос

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Автор ответа: m46patton2013

0

если одну сторону взять за часть(или х ) но другая сторона 9 таких частей .а всего 9+1=10
Р=40:2:10=20:10=2 см одна сторона вторая 9*2=18см длина
S=2*18=36 cм2

Автор ответа: Аноним

0

длина будет равна 18см.

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