Can anyone help me with this question please.
I’ll mark as a brainliest.

Answer:
Hypotenuse
Step-by-step explanation:
We have the Pythagorean Theorem.
In simple terms, the Pythagorean Theorem can be explained by one equation.
[tex]a^{2} + b^{2} + c^{2}[/tex]
a and b being the legs while c being the hypotenuse.
Looking at the sentence, we can see that hypotenuse is our answer.