It is known that the height of the Metasequoia tree is 40m to 50m, and the diameter of the trunk is 1.6m to 2.4m. Do the math, at least how many meters of rope can be wound around the thickest Metasequoia tree three times?
已知水杉树的高度在40m到50m，树干直径在1.6m到2.4m．算一算，至少用多少米长的线绳才能绕最粗的水杉树三圈？
<gadget id="calculator">3.14 * 2.4 * 3</gadget>
<output>22.608</output>

<result>22.608</result>