What is the perimeter of a triangle with sides measuring 3 m, 4 m, and 5 m?

To find the perimeter of a triangle, you simply add the lengths of all its sides together. In this case, the triangle has sides measuring 3 meters, 4 meters, and 5 meters.

Calculating the perimeter involves the following steps:

1. Add the lengths of the first two sides: 3 m + 4 m = 7 m

2. Then add the length of the third side: 7 m + 5 m = 12 m

Thus, the total perimeter of the triangle is 12 meters.

This confirms that the correct answer is associated with the total sum of the sides. The other options do not align with the mathematical operation of adding these three side lengths together, which leads to the conclusion that only the chosen answer accurately represents the perimeter of this triangle.