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l = 3n
t = 2n
luas ABCD = p x l
300 = 4n x 3n
300 = 12n
n = 300/12
n = 25
jadi, p =4n = 4.25 = 100
l = 3n = 3.25 = 75
t = 2n = 2.25 = 50
Volume = p x l x t
= 100 x 75 x 50
= 375000 cm³
jadi, p= 4x5=20 cm l= 3x5=15 cm
t= 2x5=10 cm
jadi, V= 20x15x10= 3000 cm'3
Maaf kalo salah :)