If a circle has a diameter of 2 cm and a sector with a central angle of 108° is cut from the circle, what is the circumference of the sector in centimeters?
一个圆的直径是2厘米，从该圆中剪一个圆心角为108°的扇形，该扇形的周长是多少厘米．
<gadget id="calculator">2 / 360</gadget>
<output>1/180 = around 0.005556</output>

<gadget id="calculator">3.14 * (1/180) * 108</gadget>
<output>1.884</output>

<gadget id="calculator">1.884 + 2</gadget>
<output>3.884</output>

<result>3.884</result>