Thursday, April 17, 2008

Jessica Q's Scribe Post

Circumference of a Circle:
  • The circumference(c) of a circle is the distance around the circle.
    c = 2πr
  • The radius (r) of a circle is the distance from the center of the circle to the outside.
  • The diameter(d) of a circle is the length of half of the circle or twice the length of the radius.
  • π or pi is a constant and is approximately equal to 3.14
    Radius: d / 2
    Diameter: 2 x r
    Circumference: 2 x π x r

Area of a Circle:

Radius² - Area of a circle
- Area of circle = πr²
π (Pi) - 3.14
The Area - (3.14)(r²)

Surface Area of a Cylinder:

Volume of a Cylinder:

Volume = Area of base x height

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