A vegetable field that is similar to a parallelogram has an area of 270 square meters, a base of 30 meters, and a height in meters.
一个近似于平行四边形的菜地，面积是270平方米，底是30米，高是多少米．
<gadget id="calculator">270 / 30</gadget>
<output>9</output>

<result>9</result>