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

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

Answer :

To find the length of an arc in a circle, you can use the formula:

[tex]\[
\text{Arc Length} = \text{Radius} \times \text{Central Angle (in radians)}
\][/tex]

Here’s how to apply this formula to the problem:

1. Identify the Given Values:
- The radius of the circle is 10 inches.
- The central angle ([tex]\(\theta\)[/tex]) is given in radians as [tex]\(\frac{2\pi}{3}\)[/tex].

2. Apply the Formula:
- Substitute the given values into the formula for arc length:
[tex]\[
\text{Arc Length} = 10 \times \frac{2\pi}{3}
\][/tex]

3. Calculate the Arc Length:
- Multiply the radius by the angle in radians:
[tex]\[
\text{Arc Length} = 10 \times \frac{2\pi}{3} \approx 20.94 \text{ inches}
\][/tex]

So, the approximate length of the arc is 20.94 inches. Therefore, the correct answer is 20.94 inches.

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Rewritten by : Jeany