The length of the platoon is an illustration of multidimensional arrangements
The length of the platoon is 30 meters
The number of students is given as:
[tex]\mathbf{n = 120}[/tex]
The number of columns is given as:
[tex]\mathbf{Columns = 4}[/tex] -- i.e. the number of students on a row
Start by calculating the number of rows using:
[tex]\mathbf{Rows \times Columns = n}[/tex]
So, we have:
[tex]\mathbf{Rows \times 4 = 120}[/tex]
Divide both sides by 4
[tex]\mathbf{Rows = 30}[/tex]
In adjacent rows, there is a distance of 1 meters.
So, the length of the row is:
[tex]\mathbf{Length = 30 \times 1 m}[/tex]
[tex]\mathbf{Length = 30 m}[/tex]
Hence, the length of the platoon is 30 meters
Read more about arrangements at:
https://brainly.com/question/18833692