A triangle and a parallelogram have the same area and base, the height of the triangle is 10 cm, and the height of the parallelogram is cm.
一个三角形和一个平行四边形的面积和底分别相等，三角形的高是10cm，平行四边形的高是多少cm．
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<result>5</result>