Arc Length & Area of a Sector (3.2) JMerrill, 2009

Recall: Arc Length IIn geometry, an arc length is represented by “s”  If any of these parts are unknown, use the formula r r s θ Where theta is in radians

You Do: Arc Length AA circle has a radius of 15 inches. Find the exact length of the arc intercepted by a central angle of.

Area of a Sector TThe area of a circle is given by TThe area of a sector (the “piece of the pie”) is given by ((you can also )

Example  Approximate the area of a slice of a 16” pizza that is 1/8 of the whole pie. 