The area of a parallelogram is 11.2 square meters, the height is 4 meters, and the base is in meters.
一个平行四边形的面积是11.2平方米，高是4米，底是多少米．
<gadget id="calculator">11.2 / 4</gadget>
<output>2.8</output>

<result>2.8</result>