12.04.2022

перимитр прямоугольника равен 6дм 8см,одна их его сторон на 1 дм 6 см мнешь соседней сьлроны.найдите площать прямоугольника

Ответ учителя по предмету Математика

x — 1ая сторона

x+16 — 2ая сторона

(x+x+16)x2=68

2x+16=34

2x=18

x=9

9+16=25(см) — 2ая сторона

9×25=225см=22дм 5 см

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