SOLUTION: use the pythagorean theorem to find the length of the hypotenuse of this triangle: 3 cm and 6 cm.

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Question 715263: use the pythagorean theorem to find the length of the hypotenuse of this triangle: 3 cm and 6 cm.
Answer by Simnepi(216) About Me  (Show Source):
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Pythagoras theorem is a%5E2%2Bb%5E2=c%5E2 where and and b are the lengths of the short sides and c is the length of the hypotenuse.
so, substituting values we get
3%5E2%2B6%5E2=c%5E2
therefore
9%2B36=c%5E2
so
c%5E2=45
to find c we take square roots i.e.
c=sqrt%2845%29
using a calculator we find
c=6.7 cm to 1 decimal place