Question

find the length of the third side. if necessary, round to the nearest tenth. answer attempt 1 out of 2

Explanation:

Step1: Identify the formula

Use the Pythagorean theorem $a^{2}+b^{2}=c^{2}$, where $c$ is the hypotenuse. Here, assume the hypotenuse is the unknown side, $a = 3$ and $b=7$.

Step2: Apply the formula

$c=\sqrt{3^{2}+7^{2}}=\sqrt{9 + 49}=\sqrt{58}$.

Step3: Round the result

$\sqrt{58}\approx7.6$.

Answer:

$7.6$