If a straight cylinder with a height of 10 cm is cut into two half cylinders along the diameter of the base, its surface area is increased by 240 square centimeters, what is the volume of the cylinder?
把一个高10厘米的直圆柱体沿着底面直径切割成两个半圆柱，它的表面积增加了240平方厘米，这个圆柱的体积是多少．
<gadget id="calculator">240 / 2 / 10</gadget>
<output>12</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">3.14 * 36 * 10</gadget>
<output>1_130.4</output>

<result>1_130.4</result>