Answer:
<u>551 square centimeters</u>
Step-by-step explanation:
Finding the radius (r) :
- C = 2πr
- 83.21 = 2 x 3.14 x r
- 83.21 = 6.28r
- r = 83.21/6.28
- r = 13.25 cm
Finding the area :
- A = πr²
- A = 3.14 x (13.25)²
- A = 3.14 x 175.5625
- A = <u>551 square centimeters</u> (nearest whole number)
<u></u>
The area of this hub cap is about <u>551 square centimeters</u>.
 
        
                    
             
        
        
        
240÷6=40 so the answer would be "The train is traveling 40 miles per hour."
        
                    
             
        
        
        
Erica knits 39 on friday just add 21 and 18 then u get 39 hope i helped