A parallelogram has the same base and area as a triangle, and the height of the triangle is 4 cm. What is the height of the parallelogram?
一个平行四边形与一个三角形底相等，面积也相等，三角形的高是4厘米，那么平行四边形的高是多少．
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<result>2</result>