Question

Jamila wants to walk with her friend at the park but isn’t sure how long the course is. She knows it is a circular path with a walkway through the middle, and the path across the middle is 12
1
2
of a mile. What is the distance all the way around the circle? Give the answer to the nearest tenth of a mile.(1 point)
Responses

18.8 mi
18.8 mi

0.8 mi
0.8 mi

1.6 mi
1.6 mi

3.1 mi

Answer 1

The straight walkway through the middle is the circle’s diameter, so d = 1/2 mile. The circumference is C = πd = π(0.5) ≈ 1.5708 miles. Rounded to the nearest tenth: 1.6 miles.