Hello, Volume of the cube= s^3 where s represent side of the cube
Apply all the information that we had into this problem: 343=s^3 To find the side, cubic root it to get: s=7 cm. To find S.A= s^2×6 =7^2×6 =49×6 =294 cm square. As a result, the surface area of the cube is 294 square cm. Hope it help!