help me please number 5

Using the Pythagorean Theorem, it is found that the length of the hypotenuse is of 10.44 units.
The Pythagorean Theorem relates the length of the legs [tex]l_1[/tex] and [tex]l_2[/tex] of a right triangle with the length of the hypotenuse h, according to the following equation:
[tex]h^2 = l_1^2 + l_2^2[/tex]
In this problem, the legs are of 3 units and 10 units, hence the hypotenuse is given by:
[tex]h^2 = 3^2 + 10^2[/tex]
[tex]h^2 = \sqrt{109}[/tex]
h = 10.44.
More can be learned about the Pythagorean Theorem at https://brainly.com/question/654982
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