Answer:
The answer is 276.32 square yards.
Step-by-step explanation:
To solve for the surface area of a cylinder, use the surface area of a cylinder formula, which is SA= 2 rh + 2
rh + 2
 . However, instead of using (
. However, instead of using ( ), 3.14 will be used.
), 3.14 will be used. 
Next, plug in the information from the question into the formula. The formula will look like SA= 2(3.14)(4)(7) + 2(3.14)( ). Then, solve the equation, and the final answer will be 276.32 square yards.
). Then, solve the equation, and the final answer will be 276.32 square yards. 
 
        
             
        
        
        
Answer:
60
Step-by-step explanation:
Angle AFC is supplementary to angle CFE. Supplementary angles always equal 180 degrees. (180-120=60)
 
        
                    
             
        
        
        
Answer:
yes it is a change of state since both hydrogen and oxygen are gas.