6. The Area of a Circle
  • Print out this page and cut out the circle in 16 sectors.
  • Use the cutouts to justify that the area of a circle is A circle = r2.
  • Previous Knowledge: You will need to know the circumference of the circle.
  • (Hint: Shape the sectors into a parallelogram. Tape or paste your parallelogram on a piece of paper and write your observations.)


    Area Formula Lab

    Copyright 1998 by Margo Lynn Mankus