In order to prevent the cattle from grazing randomly, the owner tied one end of the rope to the cattle and the other end to a tree. In this way, after the cattle tighten the rope, they can eat grass up to 3 meters away. If the largest area that the cow can eat grass is divided equally between three lambs, what is the area of grass that each lamb eats?
为了不让牛乱吃草，主人用一根绳子一端拴住牛，另一端拴在树上．这样牛拉紧绳子后，最多能吃到3米远的草．如果把这头牛能吃到草的最大面积平均分给3只小羊吃，每只小羊吃草的面积是多少？
<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">9 / 3</gadget>
<output>3</output>

<gadget id="calculator">3.14 * 3</gadget>
<output>9.42</output>

<result>9.42</result>