Divide a circle into several (even-numbered) equal parts, and then cut and assemble it into an approximate rectangle. The length of the rectangle is 6.28 cm. What is the width of the rectangle?
把一个圆分成若干(偶数)等份，然后把它剪拼成一个近似的长方形，长方形的长是6.28厘米，这个长方形的宽是多少．
<gadget id="calculator">6.28 / 3.14</gadget>
<output>2</output>

<result>2</result>