A triangle and a parallelogram have the same base and height, the area of the parallelogram is 24.6cm**2, what is the area of the triangle in cm**2.
一个三角形与一个平行四边形等底等高，平行四边形面积是24.6cm**2，三角形的面积是多少cm**2．
<gadget id="calculator">24.6 / 2</gadget>
<output>12.3</output>

<result>12.3</result>