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Area of a square=sxs=15x15=225
There are 5 surfaces that are squared
so the total area of the squared surfaces=225x4=900 ft square
Are of a triangle=1/2 bxh
the triangular surfaces are four hence their total surface area is 67.5x4=270
the total surface are =total area of the squared surfaces+total area of squared surfaces=270+900
Total surface area=1170 ft squae
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