Answer:

Explanation:
We have:
two triangles with base b = 17in and height h = 7in
two rectangles with length l = 17in and width w = 10in
two rectangles with length l =11in and width w = 10in
one rectangle with length l = 8in and width w = 11in
one rectangle with length l = 15in and width w = 11in
one rectangle with length l = 17in and width w = 11in
The formula of an area of a triangle:

b - base
h - height
The formula of an area of a rectangle:

l - length
w - width
Calculate:

The Surface Area:

Substitute:
