The surface area of the barn is 2040 square feet.
What is a rectangle?
A rectangle is a plane shape with four sides and four right angles.
Analysis:
The barn is composed of:
Two straight long rectangles with dimensions = 10ft x 40ft
Two slant rectangles with dimensions = 10.6ft x 40ft
Two short rectangles with dimensions = 10ft x 14ft
Two triangles, height 8ft and base 14feet
The surface area of barn = 2(10x40) + 2(10.6 x 40) + 2(1/2 x 14 x 8) + 2(10 x 40) = 800 + 848 + 112 + 280 = 2040 square feet
In conclusion, the surface area of the barn is 2040 square feet.
Learn more about rectangles: brainly.com/question/25292087
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