Предмет: Математика, автор: Аноним

4. Периметр прямоугольника равен 160 см, а ширина на 10 см меньше длины. Найдите его длину. 5. Стороны прямоугольника равны 6 см и 12 см. Найдите сторону квадрата периметр которого равен периметру данного прямоугольника

Elena3982: 160:2=80 см- две стороны прямоугольника. 80-10=70 см ;70:2=35см - ширина; 35+10=45см -длина

Elena3982: Р= (6+12)•2=36см; Р=а•4; Р=36см 36:4=9см -сторона квадрата.

Ответы

Автор ответа: Kokos303Love

Ответ:

1) 160 : 2 = 80(см) полупериметр прямоугольника

2) 80 - 10 = 70 ( см) был бы полуметр прямоугольника,. если бы стороны были равны

3) 70 : 2 = 35(см) ширина прямоугольника

4) 35 +10 = 45(см)

Ответ: 45см - длина прямоугольника.

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