The area of a triangular piece of iron is 45 square decimeters, the base is 9 decimeters, what is the height of its base in centimeters?
一块三角形铁片的面积是45平方分米，底是9分米，它的底边上的高是多少厘米？
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">45 * (2/9) * 45 * (2/9)</gadget>
<output>100</output>

<result>100</result>