A parallelogram has the same area and base as a triangle. The height of the parallelogram is 6 cm. What is the height of the triangle?
一个平行四边形与一个三角形的面积相等，底也相等，平行四边形的高是6厘米，三角形的高是多少．
<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<result>12</result>