The perimeter of a triangle is 48 cm and the ratio of the three sides is 3:4:5. What is the area of the triangle in square centimeters?
一个三角形的周长是48厘米，三条边的比是3：4：5，这个三角形的面积是多少平方厘米．
<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">48 * (1/4)</gadget>
<output>12</output>

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

<gadget id="calculator">48 * (1/3)</gadget>
<output>16</output>

<gadget id="calculator">16 / 2</gadget>
<output>8</output>

<gadget id="calculator">12 * 8</gadget>
<output>96</output>

<result>96</result>