triangle and a parallelogram have the same area and the same height, if the base of the triangle is 36 decimeters, then how many decimeters is the base of the parallelogram.
一个三角形和一个平行四边形的面积相等，高也相等，如果三角形的底是36分米，那么平行四边形的底是多少分米．
<gadget id="calculator">36 / 2</gadget>
<output>18</output>

<result>18</result>