A right-angled triangle with an area of 13.5cm**2, one of its right-angled sides is 4.5cm, what is its other right-angled side?
一个面积为13.5cm**2的直角三角形，其中一条直角边为4.5cm，它的另一条直角边是多少．
<gadget id="calculator">2 / 4.5</gadget>
<output>0.444444</output>

<gadget id="calculator">13.5 * 0.444444</gadget>
<output>5.999994</output>

<result>5.999994</result>