On a square paper with a side length of 6 cm, cut a circle with a diameter of 2 cm. How many pieces do you think can be cut at most?
在一张边长6厘米的正方形纸上，剪直径是2厘米的圆片，你认为最多能剪多少片．
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

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

<result>9</result>