Предмет: Математика, автор: alishbaim006

Одну сторону прямоугольника увеличили на 40 процентов а вторую сторону увеличили на 30 процентов как изменится площадь прямоугольника?

Ответы

Автор ответа: macsim444ksim0ff

Ответ:

Уменьшится на 2%

Пошаговое объяснение:

Предположим, что ширина - x, тогда длина - y.

S₁=x*y

S₂=(1,4*x)*(0,7*y)=0,98xy

xy-0,98xy=0,02xy=2%

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