katyromero3279 katyromero3279 28-04-2017 Mathematics contestada 3. A cube is 6 inches wide. What is the surface area of the cube? a. 36 in b..216 in c. 72 in d. 108 in 4. A triangle has a base of 12m and a height of 9m. What is the triangle"s area? a. 21 m b. 108 m c. 54 m d. 1.3 m