This net can be folded to make a square pyramid. What is the surface area of the pyramid?

Step-by-step explanation:

to find the surface area we need to find the followng areas:  

And once we have those areas, we add them to find the surface area.

Area of the square:

the formula to find the area of a square is:

where is the length of the side:

thus the area of the square is:

Area of the triangles:

the are of 1 triangle is given by

where is the base of the triangle: (the base of the triangle is the side of the square)

and is the height of the triangle:

thus, the area of 1 triangle is:

the area of the 4 triangles is (we multiply by 4):

finally we add the area of the square and the area of the 4 triangles to find the total surface area:

nope.   happens to me as well.

-aparri