A triangle and a parallelogram have the same area and the same base. If the height of the triangle is 6 cm, what is the height of the parallelogram in cm?
一个三角形与一个平行四边形的面积相等，底也相等．如果三角形的高是6cm，那么平行四边形的高是多少cm．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">6 * (1/2)</gadget>
<output>3</output>

<result>3</result>