V ( cylinder ) = r² π h
V ( cone ) = 1/3 r² π h
A cone that fits exactly inside the cylinder has the volume:
V ( cone ) = 1/3 V ( cylinder = 1/3 · 81 = 27 ft³
        
             
        
        
        
Answer:
I THINK it's A
Step-by-step explanation:
 
        
             
        
        
        
Answer:
12- 4i
Step-by-step explanation:
(4+6i)+(8-10i)
4+6i+8-10i
4+8+6i-10i
12-4i
 
        
             
        
        
        
Answer:
I not sure this 76.5
Step-by-step explanation:
9cmx17cm=156/2=76.5
Then 76.5/2= 39
I hope this helpful for you.... Sorry....
 
        
             
        
        
        
Answer:
Listed 
Please mark me as the brainliest and thanks