To find the answer, find the area of one of the triangles by doing A=(1/2)Bh, then multiply that answer by 4 to get all four triangles, and then add the area of the square base.
Area one Triangle= (1/2)(5)(6)=15
Area All Triangles= 5*4= 60
Area of Square Base= 5*5= 25
Surface Area of Prism= Area of All Triangles+Area of Square Base
SA= 60+25= 85
The answer is 85 square inches