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Using Pythagoras
Updated: 9/24/2020
Using Pythagoras
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Storyboard Text

  • When do we need to leave?
  • I don't know. How far away is the restaurant?
  • The town hall is 3km West, and the restaurant is 4km North of that.
  • Lets use Pythagoras's Theorem! That will help us find the shortest route.
  • To find the distance, we must find the hypotenuse of a right-angled triangle with sides of 3km and 4km
  • Pythagoras's theorem states that the square of the hypotenuse is equal to the sum of the squares of the other two sides.
  • 32 + 42 = x29 + 16 = x225 = x2The square root of 25 is 5, so the distance must be 5km!
  • We better get moving then.
  • The road is diagonal from the way we were previously facing, which is because the hypotenuse is diagonal.
  • If we didn't use Pythagoras's theorem, we would have had to go 7km instead of 5km!
  • And we made it just in time!
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