+129899 Surface area = base area + area of 4 congruent triangles forming the sides
Base area = area of a square = (10 * 10 ) = 100 in^2
Area of each triangle = (1/2) (base) (height) = (1/2) (10) (9)
So...total area of sides = 4 (1/2) (10) (9) = 2 * 10 * 9 = 180 in^2
So.....what's the answer, Nick ???
