Circumference of a Circle. Lesson 10.8. Perimeter. the perimeter is the distance around a figure. Find the perimeter to side ratio. 6 units. 6 units. 6 units. 6 units. Find the perimeter to side ratio. Total Perimeter = 6 x 4 or 24 units. Find the perimeter to side ratio. 11 units.
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Circumference of a Circle
Total Perimeter =
6 x 4 or 24 units.
Why is the perimeter/side ratio always 4?
A square consists of 4 sides of equal length. Therefore, the perimeter of a square is 4 times the length of one of its sides.
Take out your spiral!
The radius is ½ of the diameter.
The diameter is twice the radius.
27 cm = 2.7 mm
circumference = π