 
       
      
    5. Tick the correct answer in the following and justify your choice : If the perimeter and the area of a circle are numerically equal, then the radius of the circle is
                (A)    2 units
                (B)     units
                (C)    4 units
                (D)    7 units
 
                
                  Let the radius of circle be r.
Then according to question, we can write :-
Perimeter = Area
                                    
Hence option (A) is correct.
 
                