Предмет: Математика, автор: elkakadyrkulova7

3. Девочке подарили кружево длиной 84 см. Она решила обшить кружевом пла- точек квадратной формы. Какого разме- ра платочек она может обшить этим кру- жевом, если на каждый уголок нужно добавить по 1 см?

Ответы

Автор ответа: abrusnova

Она может обшить платочек размером 20 на 20 так как:
80-4=80(на каждый угол добавили по сантиметру а углов 4)
80:4=20(каждая сторона)

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