Area of a Sector

Topic:
Area

Definition of Sector of a Circle

A sector of a circle is the region between two radii and an arc of the circle.

What is the AREA of the given circle (r = 4 cm) in terms of pi?

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Rounded to the nearest hundredth of a centimeter, the circle's FULL area is 50.27 square centimeters.

Since we can calculate the FULL area of any circle, we can easily compute a sector's area too.

The area of the sector of a circle is simply a ______________ of the full circle's area.

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To determine the fraction that should be used in our calculations, we must know the size of the angle located at the circle's center.

To determine the fraction that should be used in our calculations, we must know the size of the angle located at the circle's center.
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