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A person travels 12km north by car and then 16km due east by train. How far is he from starting point
Given: A person travels 12km north by car and then 16km due east by train
To do: Find how far is he from the starting point
Solution:
Travelling north 12 km forms one side of a right triangle
Travelling east 16 km forms another side of the right triangle
Distance between the person and starting point forms the hypotenuse of the right triangle above = D
From Pythagoras Theorem we have
$D^{2} = 12^{2} + 16^{2} $
= $144 + 256$
= 400 sq km
D =
Therefore the person is 20km from the stating pointAdvertisements