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V = p x l x t = 7.500 cm^3
volume = 5 x 4 x 3 x n^3 = 7500
n^3 = 7500/60 = 125
n = akar pangkat 3 dari 125 = 5
p = 5 x 5 = 25
l = 4 x 5 = 20
t = 3 x 5 = 15
L. alas = 2(p x l) + 2(p x t) + 2(l x t) = 2(25 x 20) + 2(25 x 15) + 2(20 x 15) = 1000 + 750 + 600 = 2350 cm^2
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