We have been given net of a pyramid. We are asked to find the total surface area of the pyramid.
The surface area of the pyramid will be area of base plus area of 4 triangular sides.
We have been given that base of pyramid is square, so area of base will be square of base side.
Let us find area of one triangular side.
Now we will multiply area of one triangular face by 4 to find area of 4 triangular faces.
Total surface area of pyramid would be area of base plus area of 4 triangular faces.
Therefore, 220 square inches of copper sheet are needed to make one pyramid.