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Pachacha [2.7K]
3 years ago
10

in circle O the radius is 4ft and the measure of minor arc ab is 120 degrees find the length of minor arc ab to the nearest inte

ger
Mathematics
1 answer:
KIM [24]3 years ago
4 0

Answer:

8\:\text{ft}

Step-by-step explanation:

The length of the arc is proportional to the degree measure it in encompasses. Since there are 360 degrees in a circle and the arc is 120 degrees, the arc's length will be \frac{120}{360}=\frac{1}{3} of the circle's length (circumference).

The circumference of a circle is given by 2\pi r, where r is the radius of the circle. Therefore, the circumference of the circle is 2\pi(4)=8\pi. As we found earlier, the length of the arc is \frac{1}{3} of this circumference. Therefore, the arc's length is 8\pi\cdot \frac{1}{3}=\frac{8\pi}{3}.

To the nearest integer, this is \approx \boxed{8\:\text{ft}}.

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