Hello!
First of all, let's find the area of the upper rectangle. We have side lengths 5 and 6, so its area is 30.
Now to find the bottom. If we add our ten, and the five on top, we get a length of 15. We multiply this by 6, giving us 90.
Now we add.
90+30=120
Therefore, our answer is A) 120 square units.
I hope this helps!
