This net can be folded to form a cube with a side length of 20 units.

Step-by-step explanation:

A cube has 6 faces and faces are square in shape. Thus to find the surface area of a cube, first we will find the area of one face. To find the area of a face we will simply multiply the side length twice.

20*20=400

Thus the area of one face = 400 units square.

Now to find the surface area of a cube we will simply multiply the area of one face by the number of total faces of a cube.

400*6 = 2400

Therefore the net folded to form a cube has a surface area of 2400 units square ...