The radius of the base of a cylinder is 5 decimeters, the lateral area is 188.4 square decimeters, how many decimeters is the height?
一个圆柱的底面半径是5分米，侧面积是188.4平方分米，高是多少分米？
<gadget id="calculator">3.14 * 5 * 2</gadget>
<output>31.4</output>

<gadget id="calculator">188.4 / 31.4</gadget>
<output>6</output>

<result>6</result>