triangle and a parallelogram have the same area and the same base. If the height of the parallelogram is 7 cm, what is the height of the triangle in cm?
一个三角形和一个平行四边形的面积相等，底也相等，如果平行四边形的高是7厘米，那么三角形的高是多少厘米．
<gadget id="calculator">7 * 2</gadget>
<output>14</output>

<result>14</result>