Respuesta :

ManpreetCheema

Answer:

486

Step-by-step explanation:

  • Surface area means the area of each side added up
  • In a cube, every side is the same
  1. the area of one side = 9 * 9 = 81, since it is a square (width*height) and width and height are the same.
  2. in a cube there are 6 sides
  3. so there are 6 sides with area 81
  4. 81 * 6 = 486