The area of a parallelogram is 80.8 square decimeters, what is the area of a triangle with the same base and height as it?
一个平行四边形的面积是80.8平方分米，与它等底等高的三角形的面积是多少平方分米．
<gadget id="calculator">80.8 / 2</gadget>
<output>40.4</output>

<result>40.4</result>