A bundle of wires goes around the pole exactly 9 times, and the diameter of the pole is 12 cm. How long is the bundle of wires in meters?
一捆电线正好绕了电线杆9圈，电线杆直径都是12厘米，这捆电线长多少米？
<gadget id="calculator">12 / 100</gadget>
<output>3/25 = around 0.12</output>

<gadget id="calculator">3.14 * (3/25) * 9</gadget>
<output>3.3912</output>

<result>3.3912</result>