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150 = 6 .s²
s²=150÷6
s²=25
s=5
lebar = 4 X 2,25= 9
tinggi = 4 X 0,75 = 3
PANJANG RUSUK = 20 + 9 + 3 = 32
2) l.kubus = 6s²
150 = 6 .s²
s²=150÷6
s²=25
s=5