Answer:
10°
Step-by-step explanation:
All angles on a straight line equal 180°.
The area of smaller square is 81
Add 1/4 by 1/6 and get 5/12 so then you have 7/12 with black hair.
7.66. If 100%=1, then 700%= 7. Then if 10%=.1 then 60%=.6. And lastly if 1%=.01 then 6%=.06. Add them all up: 7+.6+.06= 7.66. HTH