Respuesta :

The Pythagorean theorem states that, if c is the length of the hypotenuse of a right triangle and a and b the lengths of its legs, then

[tex]c^2=a^2+b^2[/tex]

Making this an equation for b, which is the side we're interested in, we get:

[tex]b^2=c^2-a^2[/tex]

Using the values we were given:

[tex]b^2=30^2-18^2=900-324=576[/tex]

Taking the square root of both sides:

[tex]b=\sqrt[]{576}=24[/tex]

And so, the correct answer is the first option.

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