Here is a picture of a cube, and the net of this cube. What is the surface area of this cube?

Answer: 864mm
Step-by-step explanation:
A cube has 6 faces and each side of the face is 12mm. Cubes are square, so each of the sides is the same value.
We take 12mm x 12mm = 144mm as an area for ONE side.
There six sides, so take 144 x 6 = 864
The area is 864mm
34.0157 (inches)
86.4 (cm)