Odpowiedzi

2010-04-08T23:00:10+02:00
18cm ,21 cm i 27 cm
(27 + x )² = 21² + (18+ x)²

729 + 54x + x² = 441 + 324 + 36x + x²
18 x = 38 / :18
x = 38/18 = 19 / 9

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