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The radius of a circle is 3 inches. What is the area of a sector bounded by a central angle measuring 240°?

User Yaegor
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1 Answer

4 votes

Answer:

the area of the sector is 6π square inches.

Explanation:

First, we need to find the length of the arc that bounds the sector.

The circumference of the circle is 2πr, where r is the radius, so the circumference of this circle is 2π(3) = 6π inches.

To find the length of the arc that bounds the sector, we need to find what fraction of the circumference the central angle measures. The whole circle has a central angle of 360°, so if the central angle of the sector is 240°, then the fraction of the circle that it bounds is 240°/360° = 2/3.

Therefore, the length of the arc that bounds the sector is (2/3) * 6π = 4π inches.

Now, to find the area of the sector, we need to use the formula:

area of sector = (central angle / 360°) * πr^2

Plugging in the values we have:

area of sector = (240° / 360°) * π(3)^2

area of sector = (2/3) * 9π

area of sector = 6π

So the area of the sector is 6π square inches.

User MurugananthamS
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