The volume of a cylinder is 45 cubic decimeters, the area of the base is 10 square decimeters, what is the height?
一个圆柱的体积是45立方分米，底面积是10平方分米，高是多少．
<gadget id="calculator">45 / 10</gadget>
<output>9/2 = around 4.5</output>

<result>9/2 = around 4.5</result>