The ratio of the three sides of a right triangle is 3:4:5, and the perimeter of this triangle is 48. What is its area.
一个直角三角形三条边的比是3：4：5，这个三角形的周长是48．它的面积是多少．
<gadget id="calculator">3 + 4 + 5</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">3 / 12</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">48 * (1/4)</gadget>
<output>12</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">16 * 6</gadget>
<output>96</output>

<result>96</result>