What is the area of a triangle with a base of 10 and a height of 5?

To find the area of a triangle, you can use the formula:

Area = (base × height) / 2.

In this case, the base of the triangle is 10 and the height is 5. Plugging these values into the formula gives:

Area = (10 × 5) / 2,

Area = 50 / 2,

Area = 25.

This calculation shows that the area of the triangle is indeed 25. Therefore, this answer represents the correct application of the formula for the area of a triangle using the given dimensions. The formula is derived from the understanding that a triangle is essentially half of a rectangle or parallelogram that shares the same base and height. This is why the correct selection is 25.