Use 36cm long iron wire to form a right triangle. The length ratio of the three sides of this right triangle is 3:4:5. What is the area of this triangle in cm**2.
用36cm长的铁丝围成一个直角三角形，这个直角三角形三条边的长度比是3：4：5，这个三角形的面积是多少cm**2．
<gadget id="calculator">3 + 4 + 5</gadget>
<output>12</output>

<gadget id="calculator">3 / 12</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">4 / 12</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) / 2</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">36 * (1/4) * 36 * (1/6)</gadget>
<output>54</output>

<result>54</result>