The surface area of a square pyramid is 189 square inches. The side length of the base is 7 inches. What is the value of x?

To know the answer in the problem above, we will use the formula for getting the surface area of a square pyramid where one side of the base is 7 inches and the surface area is 189 sq inches and x is the height of the square pyramid. In equation, A = a^2 + 2a√a^2 / 4 + h^2. The height would be, 9.39 inches.