Предмет: Математика, автор: nmelnik283

Довжина майданчика дорівнює 16м,а ширина на 6м коротша.На відстані 5м від майданчика виклали бордюр.Знайди площу прямокутника,по лініях якого виклали бордюр

Ответы

Автор ответа: koteykakoteyka98
2

Ответ:

S=520м²

Пошаговое объяснение:

Спочатку знаходимо ширину майданчика, тобто:

1)16-6=10 м — ширина майданчика

Якщо бордюр виклали з кожної сторони по 5 метрів, то кожна сторона повинна збільшитися на 10 м, тобто:

2)10+5+5=20 м — ширина майданчика разом з проміжком між майданчиком і бордюром;

3) 16+5+5=26 м — довжина майданчика разом з проміжком між майданчиком і бордюром;

Далі рахуємо площу, тобто множимо ширину і довжину майданчика разом з проміжком:

4)20•26=520 м² — площа майданчика до бордюра

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