Given:
Perimeter (P) of an equilateral triangle = 147 km.
Required:
To find the length of each side (s) of an equilateral triangle.
Explanation:
The perimeter of an equilateral triangle is given by,
[tex]P=3\times s[/tex]Substituting values, we get the length of each side (s) of an equilateral triangle (in km) as follows:
[tex]\begin{gathered} P=3\times s \\ \Rightarrow147=3\times s \\ \Rightarrow s=\frac{147}{3} \\ \Rightarrow s=49 \end{gathered}[/tex]Final Answer:
The length of each side (s) of an equilateral triangle (in km) is,
[tex]s=49[/tex]