F+G:

Then, add the elements that occupy the same position:

Solve

So, we find the element at address h31:

In this case, position h31 is - 8.0
V = l * w * h
240 = 20* h
divide both sides by 20
12 = h
height = 12 inches
You would use 539 and square it on you cal. just once. Then once you do that the answer is not going to be a whole number it is going to have a decimal, so the answer would be 23.22.
Try to find out distinct shapes in the polygon and use their area formulas, then add up all of the shape's areas.
Answer:
B is the awnser
Step-by-step explanation: