The formula for the surface area of a triangle pyramid is shown below: SA = A + (3/2)Bh Where SA for surface area, A=base are, b=base and h=height. We can solve for surface are since all values needed are given. SA = (0.07) + (3/2)*1.2*0.75 SA=1.42 square foot Therefore, the surface area is 1.42 square foot.