Предмет: Математика, автор: namazbekovaazalia68

Можете помочь номер 9

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Автор ответа: сок111213

0

Р = 84 см

а = 26 см

S = ?

Р = 2(а+b)

a+b = P÷2

b = P÷2 - a = 84÷2 - 26 = 42 - 26 = 16 см

S = ab = 26×16 = 416 см

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