5. What is the surface area of the following shape

Answer:
ummm im pretty sure you mean area.... 2d shapes dont have surface area.... but ok... also is the bottom 10? i think so.... then its 90 MARK AS BRANLIEST BCUZ I SAVED YOU
Step-by-step explanation:
1/2x6x(10+20)
1/2x6(30)
3x30
90