Answer:
research it many my answer will be wrong
 
        
                    
             
        
        
        
Answer: 9x^3 y^4 sqrt -3y
 
        
             
        
        
        
Answer:
Considering that the shaded area is the part of the semi circle outside the triangle:
Area of circle= Pi x radius2 (this means radius squared)
Area of triangle= 1/2 x base x height
1/2 (because it is a semi circle) x 3.14 (in replacement of pi as directed by question) x 9squared= 127.17
127.17 - (1/2 x 18 x 9) = 46.17cmsquared
 
        
             
        
        
        
Answer:
it is - 72 are 0
Step-by-step explanation: