lb7lShe1llabegrovero lb7lShe1llabegrovero

03-12-2016
Mathematics

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a boy travels 15 km due north,then goes 9 km due east,then 3km due south.how far is he from his starting point

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MonsieurPengu MonsieurPengu

03-12-2016

When you walk in a direction and later walk opposite, you can substract both. So
15-3= 12km. Now we use Pythagoras. a2+b2=c2, c being the
hypotenuse. 144+81= 225. Sqrt this and you get 15 km.

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