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p = 5x
l = 4x
t = 3x
Masukkin ke rumus volume balok
V = p*l*t
1620 = 5x * 4x * 3x
1620 = 60x³
27 = x³
3 = x
Massukin x nya
p = 5 * 3 = 15 cm
l = 4 * 3 = 12 cm
t = 3*3 = 9 cm
* = kali
semoga membantuuuuuuu!!!~~~~~~`