Hi Grade 7s!

Here is a blog just for us at FMT!

At any time, you and your parents can access class notes and important information from class. Feel free to post positive comments about the material and ask questions about lessons. Daily homework and important dates for assignments and tests will still be posted on Homework Hero. Enjoy!

Mrs. Scherger

Wednesday, 1 February 2012

4.2 Circumference of a Circle

4.2 Circumference of a Circle

Focus: Investigate the relationship between the circumference and diameter of a circle.

Explore......You need
3 different circular objects
Piece of String
Graph paper.
Ruler

Using your string and a ruler......
Measure the distance around (circumference) each shape.
Measure the radius.
Measure the diameter.

Record all measurements in your table:



The distance around a circle is the circumference.
To estimate the circumference of any circle, multiply the Diameter by 3.



There is a relationship between a circles, circumference and it's diameter.

C divided by d = pi



Examples... Find C in each circle.



Homework...

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1 comment:

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