A semicircular flower bed has a diameter of 14 meters, what is the perimeter of the flower bed in meters?
一个半圆形的花坛，它的直径是14米，求这个花坛的周长是多少米．
<gadget id="calculator">14 / 2</gadget>
<output>7</output>

<gadget id="calculator">3.14 * 7</gadget>
<output>21.98</output>

<gadget id="calculator">21.98 + 14</gadget>
<output>35.98</output>

<result>35.98</result>