A parallelogram with a base of 5 decimeters is cut and complemented to form the largest rectangle. The area of this rectangle is 17 square decimeters. What is the height of this parallelogram?
一个底是5分米的平行四边形割补成一个最大的长方形，这个长方形的面积是17平方分米，这个平行四边形的高是多少．
<gadget id="calculator">17 / 5</gadget>
<output>17/5 = around 3.4</output>

<result>17/5 = around 3.4</result>