Answer:
1432
Step-by-step explanation:
a = by/2. then add all areas together to get final answer.
Top row: 0, 45, 90, 135, 180, 225, 270, 315, 360, 405, 450, 495, 540
Bottom row: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
8 is the answer.
Basically for 3 to equal 6 you multiply it by 2, so if you do that to 4, you get 8.
To check ur answer u can do 8:6 can be simplified to 4:3 if you divide both by 2.