The order goes 4, 3, 2, 1
I have gotten 1/6 for the value, I think the person below me will answer with more work if you need to know how I got this answer.
You can find the area of the rectangle and the triangle separately and then add them together which would result in 330in. I personally do not think you should use the trapezoid formula even though they said it is a trapezoid (a trapezoid is usually not shaped like that) but if you want to it would result in 270in.
Rise over run! Y2-Y1/X2-X1
the value of -4*2 is -8 jdjdjdjdhdhdjdjdjdhdh