Total surface area of a two 3d composite cube
To calculate the total surface area of a composite cube made up of two smaller cubes, we need to consider the surface area of each individual cube and then combine them together.
Let's assume the two cubes have side lengths a and b.
The surface area of a cube is given by the formula: 6a^2.
Therefore, the total surface area of the two composite cubes is:
Surface area_cube1 = 6a^2
Surface area_cube2 = 6b^2
Total surface area = Surface area_cube1 + Surface area_cube2
Total surface area = 6a^2 + 6b^2
So, the total surface area of the composite cube made up of two smaller cubes is 6(a^2 + b^2).