By using the area formulae for triangles and rectangles and the concept of surface area of the composite figure is equal to 1108 square inches.
What is the surface area of the composite figure?
The surface area is the area of all faces of a solid. In this case, we must sum the areas of seven rectangular and two triangular faces to determine the surface area:
A = 2 · (0.5) · (12 in) · (9 in) + 2 · (11 in) · (20 in) + 2 · (5 in) · (20 in) + 2 · (5 in) · (12 in) + (12 in) · (20 in)
A = 1108 in²
By using the area formulae for triangles and rectangles and the concept of surface area of the composite figure is equal to 1108 square inches.
To learn more on surface areas: https://brainly.com/question/2835293
#SPJ1
