Answer:
-33.2
Step-by-step explanation:
Answer:
-15625
Step-by-step explanation:
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Answer:

Step-by-step explanation:
We have two triangles and three rectangles.
The formula of an area of a triangle:

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

l - length
w - width
TRIANGLE:
b = 11 in, h = 7 in

RECTANGLE 1:
l = 11 in, w = 14 in

RECTANGLE 2:
l = 9 in, w = 14 in

RECTANGLE 3:
l = 8 in, w = 14 in

The Surface Area:

Substitute:

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