A triangle and a parallelogram have the same area and the same base. If the height of the triangle is 20 cm, what is the height of the parallelogram in cm
一个三角形和一个平行四边形的面积相等，底也相等．如果三角形的高是20厘米，则平行四边形的高是多少厘米
<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<result>10</result>