A triangle with a height of 4 cm has the same area as a square with sides of 4 cm, what is the base of the triangle in cm?
一个高是4cm的三角形与边长是4cm的正方形的面积相等，三角形的底是多少cm．
<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">4 * 4 * (1/2)</gadget>
<output>8</output>

<result>8</result>