Given the speed of each runner, who’s the fastest? Stephanie runs 12 feet per second.
Liz runs 306 feet in 38 seconds.
Will runs 1 mile in 491 seconds.
Brooke runs 851 feet in 1 minute.

Brooke is the fastest

Step-by-step explanation:

12 ft / sec

306ft / 38sec = 8.05 ft / sec

1 mi / 491 sec

1 mile = 5280 ft

1 mi / 491 sec = 5280ft / 491sec = 10.75 ft / sec

851 ft / 1 min

1 minute = 60 seconds

851 ft / 1 min = 851 ft / 60 sec = 14.18 ft / sec

then:

14.18 > 12 > 10.75 > 8.05

then:

Brooke is the fastest

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.