Find the perimeter of a circle of radius 21cm
- Find the perimeter of a circle of radius 21 cm
- Find the perimeter of a quadrant of a circle of radius 21cm
- Find the perimeter of a circle whose radius is 21cm
- The perimeter of a sector of a circle of radius 21cm is 64cm find the angle of the sector
- Find the circumference of the circle
- Find area of the circle
- Find area and circumference of a circle
- Formula to find the area of circle