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LP 2(14x8) + 2 (14x5) + 2(8x5)
2 x 112 + 2 x 70 + 2 x 40
224 + 140 + 80 = 444
T = 5cm
P x L = Luas Alas
14 x L = 112
L=8cm
LP = 2(PL+PT+LT)
= 2(14.8 + 14.5 + 8.5)
= 2(112+ 70+40)
= 2(222)
= 444 cm²
Vol = P x L x T
= 14.8.5
= 560cm³