Answer:153.9 cm
Step-by-step explanation:
The area of a circle is found by pi × radius squared and pi is aprox 3.14 so 3.15×7² = 153.86 then round off to the nearest tenth you get 153.9
 
        
                    
             
        
        
        
The first statement is true.
The second statement is false.
The third statement is true.
 
        
                    
             
        
        
        
Answer: The mechanic worked 3hrs 95 minutes 
Step-by-step explanation: