It would most likely take 3-4 hours, maybe even 5.
Answer: 530.66 units²
<u>Step-by-step explanation:</u>

8-third piece
4-first shorter piece
4-second shorter piece
<h3>
Answer: 
</h3>
Explanation:
The identity we'll use is cos(-x) = cos(x) for any value of x.
So cos(-150) = cos(150).
Then locate the angle 150 on the unit circle. The terminal point is 
The x coordinate of this terminal point is the value of cos(150).