At path C, runners travel 300 degrees (0.5 miles) around a circular path and start towards the finish line. What is the circumference (in miles) of the circular path?
J 0.05
K 0.1
L 0.25
M 0.5
N 0.6

Question

At path C, runners travel 300 degrees (0.5 miles) around a circular path and start towards the finish line. What is the circumference (in miles) of the circular path? 
J 0.05
K 0.1
L 0.25
M 0.5
N 0.6

phi · Answer

use a ratio
$$ \frac{300 \deg}{360 \ deg} = \frac{0.5 \ miles}{x \ miles} $$