To find the perimeter of a rectangular garden, you can use the formula:
\[ \text{Perimeter} = 2 \times (\text{length} + \text{width}) \]
In this case, the length is 15 m and the width is 10 m. Plugging in these values:
\[ \text{Perimeter} = 2 \times (15 , \text{m} + 10 , \text{m}) \] \[ \text{Perimeter} = 2 \times 25 , \text{m} \] \[ \text{Perimeter} = 50 , \text{m} \]
Thus, the perimeter of the garden is 50 meters.