Easy!!
So, We want the area of the square, and the two trapezoids around it!
Square Formula = b*h
Trapezoid formula = 1/2(b^1+b&2)
First of all, to find the area of the square:
Do 20*12
= 240 in^2
Second of all, to find the area of the trapezoid:
Do 10(12+30)
= 420 in^2
To find the area of the whole banner, add them up!
= 420 + 420 + 240 = 1080
So, The answer should add up to 1080.
The answer is probably "B"