Problem
You start driving west for 9 miles, turn right, and drive north for another 6 miles. At the end of driving, what is your straight line distance from your starting point? Round to the nearest tenth of a mile.
Solution
Step 1 ：1. Use Pythagorean theorem: \( a^2 + b^2 = c^2 \)
Step 2 ：2. Substitute values: \( 9^2 + 6^2 = c^2 \)
Step 3 ：3. Solve for c: \( c \approx 10.8 \)
