Suatu kubus volumenya 343 liter.Panjang rusuk kubus.....cm.

volume = rusuk^3
343 = r^3
r^3 = 343
r = √343
r = 7dm -> 70cm

Volume kubus = r³
             343 liter = r³
                    r = ∛343
                    r = 7 dm = 70 cm