The base and height of a parallelogram and a triangle are both 4cm, how much is the area of the parallelogram greater than the area of the triangle in cm**2.
一个平行四边形与一个三角形的底和高都是4cm，平行四边形面积比三角形面积多多少cm**2．
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<result>8</result>