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A circle has a radius of 10 inches. Find the approximate length of the arc intersected by a central angle of [tex]$\frac{2 \pi}{3}$[/tex].

A. 6.67 inches
B. 10.47 inches
C. 20.94 inches
D. 62.8 inches

Answer :

To solve the problem, we first recall that the length of an arc for a circle is calculated using the formula

[tex]$$
\text{Arc Length} = r \theta,
$$[/tex]

where [tex]$r$[/tex] is the radius of the circle and [tex]$\theta$[/tex] is the central angle in radians.

In this problem, the radius is given as [tex]$r = 10$[/tex] inches and the central angle is [tex]$\theta = \frac{2\pi}{3}$[/tex] radians.

Substitute these values into the formula:

[tex]$$
\text{Arc Length} = 10 \times \frac{2\pi}{3} = \frac{20\pi}{3}.
$$[/tex]

To approximate this value, we can calculate

[tex]$$
\frac{20\pi}{3} \approx 20.94 \text{ inches}.
$$[/tex]

Thus, the approximate length of the arc is [tex]$20.94$[/tex] inches.

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Rewritten by : Jeany