What is the area of the triangle? base on 15 cm. 2.5 cm.

The area of a triangle is calculated using the formula A = 1/2 * base * height.

In this case, the base is 15 cm and the height is 2.5 cm.

A = 1/2 * 15 cm * 2.5 cm
A = 1/2 * 37.5 cm
A = 18.75 cm²

Therefore, the area of the triangle is 18.75 square centimeters.