To find the area of a triangle, you can use the formula:
Area = (Base × Height) / 2
In this case, the base length is 4 units and the height is 5 units. Plugging these values into the formula gives:
Area = (4 × 5) / 2
Area = 20 / 2
Area = 10 square units.
Therefore, the area of the triangle is 10 square units. This calculation highlights how the base and height correlate to determine the overall space within the triangle, showing that even with a simple geometric figure, you can derive important measurements with basic multiplication and division.