A side of a triangle is 8 decimeters long, and the height of the side is half of its base. What is the area of the triangle in square decimeters?
一个三角形的一条边长8分米，这条边上的高是它的底的一半，这个三角形的面积是多少平方分米．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<result>16</result>