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P = 2 + L
(2 + L) x L = 48
2L + L² = 48
L² + 2L - 48 = 0
(L + 8) ( L - 6)
ambil positif Jadi Lebar 6cm
Panjang = 8 cm
Lebar = 6cm
P = 2 + L
(2 + L) x L = 48
2L + L² = 48
L² + 2L - 48 = 0
(L + 8) ( L - 6)
ambil positif Jadi Lebar 6cm
Panjang = 8 cm
Lebar = 6cm