A parallelogram and a triangle have the same area and base. If the height of the parallelogram is 3.5 meters, what is the height of the triangle in meters?
一个平行四边形和一个三角形面积和底都相等，如果平行四边形的高为3.5米，三角形的高为多少米．
<gadget id="calculator">3.5 * 2</gadget>
<output>7</output>

<result>7</result>