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

Explanation:

Step1: Apply Pythagorean theorem

$c^{2}=a^{2}+b^{2}$, where $a = 42$ and $b = 56$.

Step2: Calculate $a^{2}+b^{2}$

$a^{2}=42^{2}=1764$, $b^{2}=56^{2}=3136$. Then $a^{2}+b^{2}=1764 + 3136=4900$.

Step3: Find $c$

$c=\sqrt{4900}=70$

Answer:

70