jawaban dan rumusnya

12. diket: luas kubus = 486 cm²
     ditanya : volume kubus=...?
      jawab
       luas kubus = 6s²
                486 = 6s²
                    s²  = 486/6
                     s² = 81
                     s = √81
                     s = 9
volume kubus = s³ =9³ =729 cm³ ..............(B)