Answer:
[tex]2400cm^2[/tex]
Step-by-step explanation:
Ok so to find the surface area of a cube is actually quite simple:
All of the cubes faces have the same area and the surface area is simply the total area of all of the cubes faces.
So to calculate this we can simply multiply the area of one face by the number of total faces (6)
The area of one face is 20 x 20 = 400
The surface area of the cube is: 400 x 6 = [tex]2400cm^2[/tex]
