Respuesta :

Answer:

[tex] \sqrt{81 - 36} \\ = \sqrt{45 } \\ = 3 \sqrt{5 } \\ = 6.71[/tex]

The length of the third side of the triangle will be 6.71 units.

What is a Pythagoras theorem?

The Pythagoras theorem states that the sum of two squares equals the squared of the longest side.

The Pythagoras theorem formula is given as

H² = P² + B²

The length of the third side of the triangle will be

Let x be the length of the third side of the triangle. Then we have

9² = 6² + x²

81 = 36 + x²

x² = 45

x = 6.708

x ≅ 6.71 units

More about the Pythagoras theorem link is given below.

https://brainly.com/question/343682

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