Answer: About 3.06
Step-by-step explanation:
We can use trigonometry functions to solve for AC. Let the ?, representing AC, be "x" in our mathematical work.
Since we have the hypotenuse and x is adjacent to the angle given, I am going to use cosine.
cos(θ) = 
cos(40) = 
0.766 ≈ 
3.06 ≈ x
x ≈ 3.06
What you would need to do, is add the area of all the rectangles. The formula is wl or width * length. So find the are of all 3 rectangles, starting from the top:
5*2 = 10
3*2 = 6
5(because the rectangles are the same length)*2=10
10+10+6=26. The area of your rectangle is 26 units
we have

Solve for w means that clear variable w

Group terms that contain the variable w, and move the other terms to the opposite side of the equation

Factor the variable w

Divide both sides by 


therefore
<u>the answer is</u>

The anwser for this question is B