Sew a lace around a circular tablecloth with a diameter of 1.2 meters. The length of the joint is 6 cm. How long is the lace?
在一块直径是1.2米的圆形桌布周围缝一条花边，接头处6厘米长，这条花边长多少米．
<gadget id="calculator">3.14 * 1.2</gadget>
<output>3.768</output>

<gadget id="calculator">3.768 + 0.06</gadget>
<output>3.828</output>

<result>3.828</result>