Question

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. For the semicircle it says 10

Answer 1

L = πr

Explanation:

Formula for calculating the length of an arc is expressed as:

L = theta/360 × 2pir

The angle substended by the semi circle is 180°

Substitute the given values

L = 180/360×2πr

L = 1/2 × 2πr

L = πr

Hence the length of the arc of a semi circle in terms of pi is L = πr where:

r is the radius of the semi circle