There is a parallelogram lawn in front of the building. After measurement, its base is 5.4m and its height is half of the base. What is the area of this lawn?
楼前有一块平行四边形的草地，经过测量，其底是5.4m，高是底的一半，这块草地的面积是多少？
<gadget id="calculator">5.4 / 2</gadget>
<output>2.7</output>

<gadget id="calculator">5.4 * 2.7</gadget>
<output>14.58</output>

<result>14.58</result>