The perimeter of a triangle is 60 cm, and the ratio of its three sides is 3:4:5, what is the height of the hypotenuse of this triangle in cm?
一个三角形的周长是60厘米，它的三条边的比是3：4：5，这个三角形斜边上的高是多少厘米？
<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">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">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">60 * (5/12)</gadget>
<output>25</output>

<gadget id="calculator">2 / 25</gadget>
<output>2/25 = around 0.08</output>

<gadget id="calculator">60 * (1/4) * 60 * (1/6) * (2/25)</gadget>
<output>12</output>

<result>12</result>