Final answer:
Briana ran a distance of 120π feet.
Step-by-step explanation:
To find the distance Briana ran, we need to find the circumference of the circle formed by her laps. The diameter of the circle is given as 120 feet. The formula for the circumference of a circle is C = πd, where C is the circumference and d is the diameter. Plugging in the given diameter, we get C = π1120 = 120π feet. Therefore, Briana ran a distance of 120π feet.