Odpowiedź:
Bok 1 - x = 2,2
Bok 2 - 4x = 8,8
Obw = 22
2 * x + 2 * 4x = 22
2x + 8x = 22
10x = 22 / :10
x = 2,2
Pole prostokąta = a*b = 2,2 * 8,8 = 19,36 cm2
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Odpowiedź:
Bok 1 - x = 2,2
Bok 2 - 4x = 8,8
Obw = 22
2 * x + 2 * 4x = 22
2x + 8x = 22
10x = 22 / :10
x = 2,2
Pole prostokąta = a*b = 2,2 * 8,8 = 19,36 cm2