A parallelogram and a triangle have the same base and the same area. If the height of the parallelogram is 4m, what is the height of the triangle in m
一个平行四边形和一个三角形底相等，面积也相同．如果平行四边形的高是4m，那么三角形的高是多少m
<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<result>8</result>