Plenty of free circle worksheets are provided for kids to develop their knowledge and skills in finding area and circumference of a circle, finding area of a sector, arc length, perimeter of sector, chord, tangent, secant, concentric circles and more.
Area of a circle = pi * r^2, where r is the radius. pi = 22/7 or 3.14 (rounded to nearest hundredth). Sometimes area will be rounded at the final answer. Lots and lots of area of circle worksheets are given here with all possible combinations. Worksheets based on finding the area using radius or diameter or circumference; finding the radius or diameter or circumference using area is provided for practice.
Area Using Radius:
Using the formula given above, you can find the area of a circle using radius. These are the basic worksheets in area of circle.
Perimeter or Circumference of a circle = 2 * pi * r, where r is the radius. pi = 22/7 or 3.14 (rounded to nearest hundredth). As in area worksheets, answers to be rounded off to the required place values. Circumference worksheets are based on finding the circumference using radius or diameter or area; finding the radius or diameter or area from circumference are provided to drill your skills on circle.
Circumference Using Radius:
Find the circumference of a circle for the given radius by using the formula given above.
Sector is part of the circle. Given below are the worksheets to find the area of sector, perimeter of sector and finding length of the arc. Round the answers to the nearest hundredth wherever necessary. These worksheets are suitable for grade 6 and up kids.
Area of Sector Worksheets:
Worksheets include finding the area of sectors using the degree, radians and arc length. It is important to know the formula to solve these worksheets.