Example 1

저자:Walch Education

주제:각, 넓이, 원

A circle has a radius of

units. Find the area of a sector with a central angle of

.

Find the area of the circle.
Set up a proportion.
Multiply both sides by the area of the circle to find the area of the sector.

This applet is provided by Walch Education as supplemental material for their mathematics programs. Visit www.walch.com for more information.

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