Hey please help me ASAP I will give you brainlest.
       
      
                
     
    
    
    
    
    1 answer:
            
              
              
                
                
Answer:
5cm
Step-by-step explanation:
volume = πr²h
225π = π × r² × 9
225/9 = r²
r = √225/9 = 15/3 = 5cm
 
                                
             
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Answer:
subtract first term from second term
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 Every triangle adds up to 180 degrees