A triangle and a parallelogram have the same base and height, if the area of the parallelogram is 18.4dm**2, what is the area of the triangle dm**2?
一个三角形与一个平行四边形同底等高，如果平行四边形的面积是18.4dm**2，则三角形的面积是多少dm**2．
<gadget id="calculator">18.4 / 2</gadget>
<output>9.2</output>

<result>9.2</result>