A triangle with a height of 9 cm has the same area as a square with a side length of 6 cm. What is the base of the triangle?
一个高是9cm的三角形与边长是6cm的正方形的面积相等，三角形的底是多少．
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">6 * 6 * (2/9)</gadget>
<output>8</output>

<result>8</result>