Why does the midpoint formula help me determine that the diagonals of a parallelogram bisect each other?

Find the total area for the regular pyramid ( follow the answer set up in the picture)

What are the vertical asymptotes of the function f(x) =5x+5/x2 + x-2

The expression 6x2 gives the surface area of a cube, and the expression x3 gives the volume of a cube, where x is the length of one side of the cube. find the surface area and the volume of a cube with a side length of 6m