A triangle and a parallelogram have the same base and area. 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底与面积都相等，平行四边形的高为7厘米，三角形的高为多少厘米．
<gadget id="calculator">7 * 2</gadget>
<output>14</output>

<result>14</result>