The distance walked across the bridge = 0.55 mi
The circumference of a circle = πd
The circumference of the circle = 3.14 x 0.55
The circumference of the circle = 1.727 mi
Your friend walks halfway around the pond
The distance walked by your friend = 1.727/2
The distance walked by your friend = 0.8635 mi
Difference between your distance and your friend's distance = (0.8635 - 0.55) miles
Difference between your distance and your friend's distance = 0.3135 mi
Difference between your distance and your friend's distance =0.32 mi (to the nearest hundredths)
Your friend walks about 0.32 miles farther than you