Question
A man starts walking from his house towards the south.
After walking 5 km, he turned to his left and walked 6 km. Then he walked further 5 km after turning left. Then he turned to his left and continued to walk for 9 km. How far is he from his house?Solution
Plotting the path forms a right triangle: 4 km (net east-west) and 3 km (net north-south), yielding a 5 km hypotenuse.
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