Rectangular prism before.
It has 6 sides.
etc.suf.edu
If you count the sides you can tell there is 6 sides. So when you find the surface area its easy to multiply.
Why is there 6 sides? Because, the figure is in a 3rd dimension. So this is what a 3 dimensional figure is and what its can do.
Why is there 6 sides? Because, the figure is in a 3rd dimension. So this is what a 3 dimensional figure is and what its can do.
A 3 dimensional figure is a normal shape but just doubled all around. For instance a rectangle would have just a face and sides. But a rectangular prism has 6 sides. Its kinda like a cube if you think about it.