Respuesta :

randompersonlalala

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

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