There is a red line with a length of 100 cm on the table, and several circular pieces of paper with diameters of 2 cm, 3 cm, 7 cm, and 15 cm. Now cover the red wire with these circular pieces of paper. If the perimeter of the paper used is to be the shortest, what is the sum of the perimeters in centimeters?
桌面上有一条长度为100厘米的红线，另外有直径分别是2厘米、3厘米、7厘米、15厘米的圆形纸片若干．现在要用这些圆形纸片将红线盖住．如果要使所使用的纸片周长最短，那么这个周长总和是多少厘米．
<gadget id="calculator">3.14 * 100</gadget>
<output>314</output>

<result>314</result>