Πr^2(h)
π(1.2)^2)(4)=18.1 ft^3
22*18.1=398.2
        
                    
             
        
        
        
 A scale factor of 1/2 makes the triangle half the size of the original.
The original is 4 units tall, so 1/2 scale makes the new one 2 units tall.
It is 6 units long, so 1/2 would be 3 units long.
 Now since the scale factor is centered at (-1,3) fine the midpoint between The top left corner of the triangle and the center point:
Midpoint ( -1-5/2 , 3+7/2)
Midpoint = (-6/2 , 10/2)
Midpoint = -3,5
This is where the top left corner of the scaled triangle would be.
See attached picture:
 
        
             
        
        
        
Should be 1/4 to my knowledge.
        
                    
             
        
        
        
First is yes
Second is no 
Third is no
Fourth is no
        
             
        
        
        
Geometric sequences go up due to a common ratio. Here the common ratio can be worked out by dividing a term by its previous term e.g term 2 divided by term 1.

Therefore the common ratio is 6.