Find the arc length of the semicircle. Either enter an exact answer in terms of \piπpi or use 3.143.143, point, 14 for \piπpi and enter your answer as a decimal.

or

Step-by-step explanation:

Given:

A semicircle.

To find:

Arc length of the semicircle = ?

Solution:

Formula for angle subtended by an arc on the center of circle is given as:

where is the arc length and

is the radius of semicircle.

Angle of full circle is

So, angle of semicircle =

Using the formula, we can see that:

So, the answer is:

Arc Length of semicircle = or

21

step-by-step explanation:

11279

the correct answer is the second option