Question

question
addie wants to find the perimeter of triangle abc. she uses the distance formula to determine the length of $overline{bc}$. finish addies calculations to find the length of $overline{bc}$.
$overline{bc}=sqrt{(-3 - 2)^{2}+(8--4)^{2}}$
$overline{bc}=sqrt{(-5)^{2}+(12)^{2}}$
what is the perimeter of triangle abc? round the answer to the nearest tenth, if necessary.

Explanation:

Step1: Calculate the squares

First, calculate $(-5)^2$ and $(12)^2$.
$(-5)^2=25$, $(12)^2 = 144$.

Step2: Add the results

Add the two - squared values together.
$25 + 144=169$.

Step3: Take the square - root

Find the square - root of 169.
$\overline{BC}=\sqrt{169}=13$.

However, since we need to find the perimeter of $\triangle ABC$ and only the length of $\overline{BC}$ is calculated so far, and the coordinates of points $A$ and $C$ are not given completely in the problem description. Assuming we only focus on the calculation of $\overline{BC}$ as required in the problem - statement part about finishing Addie's calculations:

Answer:

13