Find the surface area of the pyramid represented by this net.

Answer:
SA = 189 cm²
Step-by-step explanation:
Surface area of the pyramid = 4·A of triangle + A square
SA = 4·(b· h/2) + side²
SA = 4·(7·10/2) + 7²
SA = 4· 35 + 49
SA = 140 + 49
SA = 189 cm²