Plz help do surface area pls pls pls

340 ft^2

Step-by-step explanation:

The uppermost triangle has base 10 ft and height 12 ft.  Thus its area is A = (1/2)(10 ft)(12 ft) = 60 ft^2.  There are four such triangular areas, so their total area is 4(60 ft^2) = 240 ft^2.  The base is 10 ft by 10 ft, which comes out to 100 ft^2.

Thus the total surface area is 240 ft^2 + 100 ft^2, or 340 ft^2

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step-by-step explanation: