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Find the area of the trapezoid and the shaded area then subtract and u have ur answers
        
             
        
        
        
Answer:
first one is 0.02   the second is 8
Step-by-step explanation:
 
        
             
        
        
        
1/2 
If ABC ~ DEF then 12/6, 16/8, and 18/9 would equal 2
BUT since we are going from a large triangle to a small triangle, our answer needs to be less then one, making our answer 1/2
        
             
        
        
        
Answer:
Step-by-step explanation:
- When 1 gallon is has been used  400 square feet of the wall will be paint 
- The unit rate is 400 square feet per gallon