Предмет: Математика, автор: polinariabokin

Довжина прямокутника 18 см, а ширина дорівнює 5/9 довжина. Знайди периметри прямокутника

Ответы

Автор ответа: daria448975

Ответ:

P=2*(a+b)

P=2*(18+18*5/9)=36+20=56 см.

Автор ответа: Lunixmolodoy

Ответ:

1) 18 * 5/9 = 2 * 5 = 10 ( см ) - ширина.

2) P = ( 18 + 10 ) * 2 = 56 (см)

Ответ: 56 см периметр прямоугольника.

Пошаговое объяснение:

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