Jawab:
P = 14 dan L = 12
Penjelasan dengan langkah-langkah:
P = L + 2
Luas = P*L
168 = (L+2)*L
168 = L^2 + 2L
L^2 + 2L -168 = 0
(L + 14)(L - 12)
L = 12 ( karena Lebar tidak mungkin negatif)
P = L + 2 = 12 + 2 = 14
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Jawab:
P = 14 dan L = 12
Penjelasan dengan langkah-langkah:
P = L + 2
Luas = P*L
168 = (L+2)*L
168 = L^2 + 2L
L^2 + 2L -168 = 0
(L + 14)(L - 12)
L = 12 ( karena Lebar tidak mungkin negatif)
P = L + 2 = 12 + 2 = 14