Answer:
2a/b1 +b2=h
And
2a/h -b2=b1
Step-by-step explanation:
 
        
             
        
        
        
Answer:
160,000
Step-by-step explanation:
400 * 200 is 80,000 just walking around once, so then multiply it by two.
80,000 * 2 is 160,000
 
        
             
        
        
        
Answer:
A
Step-by-step explanation:
supplementary angles add up to 180
angle cgr and kga are vertical angles so they are equal
that makes the two angles in question add up to 180