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Thursday, March 8, 2012

Finding the Area of a Circle - Math Module

Finding the Area of a Circle

How to find the area of a circle?
The area of a circle can be found by multiplying pi ( π = 3.14) by the square of the radius
If a circle has a radius of 9, its area is 3.14 x 9 x 9 = 254.34 square units
If you know the diameter, the radius is 1/2 as large.

The area of a circle with Radius = 9 cm,
Area =  is 254.34 square cm

Use the Formula
A = π r2
Area = pi times radius squared

Watch this video first before downloading the Pptx
PowerPoint presentation for interactive whiteboard

1 comment:

  1. There is no doubt that if students are exposed to such kind of awesome math videos, math will be no more boring or hard.

    Really like the way how to find the area of the circle is explained in the videos above.

    ReplyDelete

Math Interactive Whiteboard Resources