Question

The spokes of a bicycle wheel form 10 congruent central angles. The diameter of the circle formed by the outer edge of the wheel is 18 inches. What is the length, to the nearest 0.1 inch, of the outer edge of the wheel between two consecutive spokes?

Answer 1

find the circumference and divide it by 10

$c = d\pi \\ c = 18\pi \\ c = 56.548668... \\ \\ arc = \frac{c}{10} \\ arc = 5.654867... \\ arc = 5.7$