Cut a small circle with a circumference of 18.84 cm into two semicircles of the same size. What is the circumference of each semicircle in centimeters?
把周长18.84厘米的小圆片剪成同样大小的两个半圆，每个半圆的周长是多少厘米．
<gadget id="calculator">18.84 / 3.14</gadget>
<output>6</output>

<gadget id="calculator">18.84 / 2</gadget>
<output>9.42</output>

<gadget id="calculator">6 + 9.42</gadget>
<output>15.42</output>

<result>15.42</result>