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pxl = 24 ⇔ p = 24/l
pxt = 32 ⇔ t = 32/p ⇔ t = 32/(24/l) ⇔ t = 4l/3
lxt = 48 ⇔ l = 48/t ⇔ l = 48/(4l/3) ⇔4l²/3 = 48 ⇔ l²=48.3/4 ⇔ l²=36 ⇔ l=6
t = 4l/3 = 24/3 = 8
p = 24/l =24/6 = 4
Jumlah panjang rusuknya = 4(p+l+t) = 4(4+6+8) = 4(18) = 72 cm