A home builder wants to decorate the post at the bottom of a stairway. One way to do this is to glue a square-based pyramid to the top of the post. The pyramid is made from a single, folded sheet of copper. The square is 10 inches on a side, and the triangular sides have a central height of 6 inches.

How many square inches of copper sheet are needed to make on pyramid?

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.

2nd one in the first row is correct

a 270° rotation about point p says on e d g e n u it y (had to space it out because it says it's a misspelling so i couldn't submit it