Answer:
it is 40pi
Step-by-step explanation:
pi r^2 and you have 144 degrees shaded which is 40% of the circle. 
You find the total volume to be 100pi and you divide by .4 (40%) to get 40pi as your answer
 
        
                    
             
        
        
        
Answer:
bxc+ax32=0
Step-by-step explanation:
 
        
             
        
        
        
Seven hundred and and eighty thousand
        
             
        
        
        
The best thing is to have a ruler with the appropriate units to construct these triangles;)