3 in 3 in 3 in 3 in
A chocolate dessert is in the shape of a square pyramid the pyramid is represented with a net how many square inches of icing are needed for the face of the dessert
30 in
39 in
69 in
60 in
The total surface area of a square pyramid can be calculated by adding the area of the base (which is a square) to the area of the four triangular faces.
If each side of the square base is 3 inches, then the area of the base is 3 * 3 = 9 square inches.
Each triangular face is a right triangle with a base of 3 inches and a height of 3 inches. The area of each triangular face is 0.5 * base * height, so each face has an area of 0.5 * 3 * 3 = 4.5 square inches. Since there are four triangular faces, the total area of the triangular faces is 4 * 4.5 = 18 square inches.
Adding the area of the base and the area of the triangular faces gives a total surface area of 9 + 18 = 27 square inches.
Therefore, the correct answer is not provided in the options given.