Circles. Parts of a Circle Center The diameter is the distance across the circle through the center The radius is the distance to the center point.

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Presentation transcript:

Circles

Parts of a Circle Center The diameter is the distance across the circle through the center The radius is the distance to the center point

Circumference

Finding the Circumference 1)Determine whether you are given the diameter or the radius of the circle -Diameter is the entire length across the circle -Radius is only to the center point 2)Apply the correct formula and simplify -Calculate using π last using 3.14 as π -Round to the nearest tenth and use units given Find the circumference

Example Find the circumference

Guided Practice Find the circumference

Finding the Area Find the area

Example Find the area

Guided Practice Find the area