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aiman67

Ответ:

Пошаговое объяснение:

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Kasoms

a)

1) ; 126cdot frac{2}{9} = 14cdot frac{2}{1} = 28 (км) - дороги озеленили.

2) 126 - 28 = 98 (км) - дороги осталось озеленить.

Ответ: 98 км.

b)

1) ; 15cdot frac{3}{5} = 3cdot frac{3}{1} = 9 (км) - ширина поля.

2) ; P = (15+9)cdot 2 = 24cdot 2 = 48 ; (km) \\ 3) ; S = 15cdot 9 = 135 ; (km^{2})

Ответ: ширина равна 9 км; P = 48 км, S = 135 км².

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