6
What is circumference?
It's the distance a round a circular object (circle)
A CIRCLE
Other examples include ;
(b) A wheel
A bicycle wheel and A car wheel.
© Coin
6
Relationship between diameter and circumference
Fit the diameter around the Circumference
The length of the diameter fits the circumference 3 1/7 
Two radius make one diameter
Relationship between the radius and the circumference
Circumference = 2radius (2r) × pi
ACTIVITIES
Measure and record circumference and diameters of different objects and complete the table
|
Object |
Circumference |
Diameter |
Radius |
Circumference ____________ Diameter = (C/D) |
|
Shoe lid |
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|
Coin |
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|
Bottle top |
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|
Orange |
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|
Ball |
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|
Glass |
