Difficulty: Medium
Correct Answer: 8 Ft.
Explanation:
Introduction / Context:
We interpret each leg on a square grid with 90° turns and track coordinates from the starting point T to the final point R, then compute the straight-line distance TR.
Given Data / Assumptions:
Concept / Approach:
Represent positions and apply left/right relative to the current facing at each step. Distance is |Δx| if y returns to 0, else use Pythagoras.
Step-by-Step Solution:
Start T (0,0), face East.U: (4,0).Left (North) 4 → W: (4,4).Right (East) 3 → P: (7,4).Right (South) 1 → Q: (7,3).Left (East) 1 → V: (8,3).Right (South) 3 → R: (8,0).Distance TR = sqrt((8−0)^2 + (0−0)^2) = 8 ft.
Verification / Alternative check:
Sketching the path shows all vertical shifts cancel to y = 0 at the end; only the net +8 in x remains.
Why Other Options Are Wrong:
4/5/7 ft do not match the computed coordinate difference.
Common Pitfalls:
Applying left/right relative to North instead of current heading; mixing up one-foot leg directions.
Final Answer:
8 Ft.
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