An equilateral triangle and a square have the same perimeter. The side length of the square is 12 cm. What is the length of one side of the equilateral triangle in cm?
一个等边三角形和一个正方形的周长相等，正方形的边长是12厘米，等边三角形的一条边长是多少厘米？
<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">12 * (4/3)</gadget>
<output>16</output>

<result>16</result>