Sunshine Kindergarten has a parallelogram swimming pool covering an area of 380 square meters. It is known that the length of its circumference is 20 meters, please do the calculation, how many meters is its height.
阳光幼儿园有一个平行四边形的游泳池占地380平方米．已知它的四围长度都是20米，请你算一算，它的高是多少米．
<gadget id="calculator">380 / 20</gadget>
<output>19</output>

<result>19</result>