Question

What is the arc length of the semicircle?

Answer 1

The arc is equal to the half of circumference.

The formula for circumference is
`C=2\pi r=2\pi 11=22\pi\approx69.11`. Now divide that by 2 and you get
`69.11/2\approx\boxed{34.56}`

Semicircular arc has a length of approximately 34.56

Hope this helps.

r3t40