Multiple choice

A starts walking 40 m in north, then 50 m in east then 70 m in south, then 10 m in west. How far is he from the starting point?

  1. 170 m

  2. 70 m

  3. 40 m

  4. 50 m

  5. 30 m
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

There is a difference of 30 m between north and south, i.e. final position is 30 m south from the starting point. There is a difference of 40 m between east west, i.e. the final position is 40 m east of starting point. This makes a right triangle & distance can be calculated by the pythagoras theoram. ((30)2 + (40)2)1/2 = 50

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