A parallelogram and a triangle have the same area and the same height. If the base of the triangle is 8 cm, what is the base of the parallelogram in cm?
一个平行四边形与一个三角形，面积相等，高也相等，如果三角形的底是8厘米，那么平行四边形的底是多少厘米．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<result>4</result>