Questions: Mr . John has a square plot with sides that are 15 meters long. Determine its perimeter.

Determine the perimeter of Mr. John's square plot.

Identify the formula for the perimeter of a square.

The perimeter \( P \) of a square is calculated using the formula:
\[ P = 4 \times \text{side length} \]

Substitute the given side length into the formula.

The side length of the square is 15 meters. Substituting into the formula:
\[ P = 4 \times 15 \]

Calculate the perimeter.

\[ P = 60 \]

The perimeter of the square plot is \\(\boxed{60 \text{ meters}}\\).

The perimeter of the square plot is \\(\boxed{60 \text{ meters}}\\).