Step-by-step explanation:
base area of cone is given by πr^2
and 
volume of a cone is given by
1/3 π r^2 h
 
        
                    
             
        
        
        
Seven less than the quotient of a number and 12 is 4 and 3.
 
        
             
        
        
        
Kinetic energy possessed by moving train is 

.
And mass 

.
The formula for kinetic energy is 

.
Solve for velocity:


Now put in the data:
 
 
        
        
        
Answer:
44⁰.
Step-by-step explanation:
Its supplement = 180 - 136
= 44 degrees.