Question

Please see attached picture.

Answer 1

Answer:

B

Step-by-step explanation:

the arc length is calculated as

arc = circumference of circle × fraction of circle

     = 2πr × $\frac{90}{360}$

     = 2π × 16 × $\frac{1}{4}$

     = 32π × $\frac{1}{4}$

     = $\frac{32\pi }{4}$

     = 8π ft