find the length of the third side. if necessary, round to the nearest tenth.\nanswer attempt 1 out of…
find the length of the third side. if necessary, round to the nearest tenth.\nanswer attempt 1 out of 2\nsubmit answer
Answer
Explanation:
Step1: Identify the theorem
Use the Pythagorean theorem $a^{2}+b^{2}=c^{2}$ for a right - triangle. Let the two given sides be $a = 2$ and $c = 4$. We need to find $b$.
Step2: Rearrange the formula
$b=\sqrt{c^{2}-a^{2}}$.
Step3: Substitute values
$b=\sqrt{4^{2}-2^{2}}=\sqrt{16 - 4}=\sqrt{12}$.
Step4: Simplify and round
$\sqrt{12}\approx3.5$.
Answer:
$3.5$