Предмет: Математика, автор: Анонимус2014

Сторону квадрата увеличили на 4 см и получили другой квадрат площадь которого равна 100 см квадратных.Найди площадь первоначального квадрата.

Ответы

Автор ответа: 29iul

площадь квадрата вычисляется поф формуле а^2

второй квадрат 10*10=100

первый квадрат 10-4=6

и 6*6=36

Автор ответа: 3122010

S квадрата=а в квадрате

100=а в квадрате, значит сторона полученного квадрата равна корень квадратный из 100= 10см

10-4=6см- первоначальная длина стороны квадрата

6 в квадрате=36 кв.см- первоначальная площадь

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