A bundle of wires is wound into 8 turns, and the diameter of each turn is 56 cm. What is the length of the bundle of wires?
有一捆电线绕成8圈，每圈直径都是56厘米，这捆电线长多少米．
<gadget id="calculator">8 / 100</gadget>
<output>2/25 = around 0.08</output>

<gadget id="calculator">3.14 * 56 * (2/25)</gadget>
<output>14.0672</output>

<result>14.0672</result>