Formula To Find Area Of Sector

Formula To Find Area Of Sector. We discuss what a sector is as. In order to find the area of this piece, you need to know the length of the circle's radius.

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There are different tools for measuring angles, depending. Find the area of sector. Where θ equals the measure of the central angle that intercepts the arc and r equals the length of the radius.

Plug in the arc length and radius into the formula.

The formula to find the area of a sector is a =. Whenever you want to find area of a sector of a circle (a portion of the area), you will use the sector area formula: Image titled calculate the area of a sector step 6. Where, θ = the measure of the central angle given in radians.

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In cases where the portion of a circle is known, don't divide degrees or radians by for example, if the known sector is 1/4 of a circle, then just multiply the formula for the area of a circle by ¼, and you are good to go to find the area of.

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Apart from that it is helpful in mathematical geometry problems etc.

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Next time you talk to a friend, you can tell them that you ate a sector of a pizza.

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Calculating the area of sector using the known portions of a circle.

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To find the area of the sector, i need the measure of the central angle, which they did not give me.

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If the sector is a quadrant, then the angle is 90°.

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Where θ equals the measure of the central angle that intercepts the arc and r equals the length of the radius.

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Similarly below, the arc length is half the circumference, and the area id half the total circle.

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$\aa = \dfrac {r^2 \theta} 2$.