Area of circle
1)Given a circle with the radius of 5cm. Find the area of this circle. Take π as 3.14. 
  

2)Given a circle with the area of 314in². Find the radius of the circle. Take π as 3.14. 
  

3)What will be the area of circular button of radius 7 cm 
  

4)The circumference of circle whose diameter is 14 cm will be 
  

5)The perimeter of circle is its