A person walks 15 meters north, then 10 meters east. What is the shortest distan

Practice Questions

Q1
A person walks 15 meters north, then 10 meters east. What is the shortest distance from his starting point? (2023)
  1. 10 meters
  2. 15 meters
  3. 25 meters
  4. 18.03 meters

Questions & Step-by-Step Solutions

A person walks 15 meters north, then 10 meters east. What is the shortest distance from his starting point? (2023)
  • Step 1: Understand that the person walks in two directions: north and east.
  • Step 2: Visualize the path as a right triangle where one side is 15 meters (north) and the other side is 10 meters (east).
  • Step 3: Use the Pythagorean theorem, which states that in a right triangle, the square of the hypotenuse (the longest side) is equal to the sum of the squares of the other two sides.
  • Step 4: Write the formula: Distance = √(15^2 + 10^2).
  • Step 5: Calculate 15^2, which is 225.
  • Step 6: Calculate 10^2, which is 100.
  • Step 7: Add the two results: 225 + 100 = 325.
  • Step 8: Take the square root of 325 to find the distance: √325.
  • Step 9: Calculate √325, which is approximately 18.03 meters.
  • Pythagorean Theorem – The theorem states that in a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides.
  • Distance Calculation – Understanding how to calculate the straight-line distance between two points using coordinates.
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