Pythagorean Theorem

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Pythagorean Theorem

Using the Pythagorean Theorem to find the hypotenuse

We can use the Pythagorean theorem to find the hypotenuse of a right angled triangle, but only if we know the length measure of the two legs.

Find x

c²=a²+b²
c²=8²+12²
c²=64+144
c²=208
$c=\sqrt{208}=4\sqrt{13}$

In a right triangle you know the legs are 28 and 21 units long.

Calculate the hypotenuse length

Solution: