Xiao Ming cuts a circular piece of paper with a diameter of 2 cm into two semicircles. What is the circumference of each semicircle in centimeters?
小明把一个直径为2厘米的圆形纸片剪成两个半圆，每个半圆形纸片的周长是多少厘米．
<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1</gadget>
<output>3.14</output>

<gadget id="calculator">3.14 + 2</gadget>
<output>5.14</output>

<result>5.14</result>