cylindrical log with a height of 9 decimeters is cut into two half cylinders along the diameter of the base, and the surface area increases by 36 square decimeters. What is the volume of this log in cubic decimeters?
一个圆柱形木料高9分米，沿底面直径切成两个半圆柱，表面积增加36平方分米，这根木料的体积是多少立方分米？
<gadget id="calculator">36 / 2 / 9</gadget>
<output>2</output>

<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1 * 9</gadget>
<output>28.26</output>

<result>28.26</result>