Investigating circles

1
Investigating circles
2

• Draw 6 circles, each with a different radius,
  e.g. 2cm, 3cm, 4cm, 5cm, 6cm, 7cm.
• Measure the diameter and radius of each circle
• Use some other circular objects, e.g. water
  bottle, tin can, roll of sticky tape. For each
  object measure the diameter and circumference.
• Record your results in a table.

3
Investigating circumference and diameter.
Using a suitable scale, label the axes and plot
your values on a graph for each of your circles
and objects.
4
Draw a line of best fit. Should it go through
(0,0)? What relationship does your graph show
between the circumference and diameter?
Circumference (cm)
Diameter (cm)