Question

what is the length of the hypotenuse? if necessary, round to the nearest tenth. c = kilometers

Explanation:

Step1: Apply Pythagorean theorem

$c^{2}=a^{2}+b^{2}$, where $a = 18$ and $b = 80$. So $c^{2}=18^{2}+80^{2}$.

Step2: Calculate squares

$18^{2}=18\times18 = 324$ and $80^{2}=80\times80=6400$. Then $c^{2}=324 + 6400=6724$.

Step3: Find square - root

$c=\sqrt{6724}=82$

Answer:

82