Предмет: Математика, автор: natalli7811

Одну із сторін прямокутника збільшили у 8 разів, другу сторону сменьшили у 2 рази. Як змінилась площа прямокутника?

Ответы

Автор ответа: prettypushkova

а · b - первоначальная площадь прямоугольника

8а · b/2 = 4ab - площадь прямоугольника после изменения его сторон

4ab : ab = 4 (раз) - во столько раз увеличится площадь прямоугольника

Відповідь: збільшилася у 4 рази.

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