Divide the bottom surface of a cylinder with a height of 30 cm into many equal sectors, cut the cylinder along the sectors and assemble it into an approximate cuboid. The surface area of the cuboid is 600 square centimeters larger than that of the cylinder. What is the volume of the cylinder in cubic centimeters?
把一个高为30厘米的圆柱的底面分成许多相等的扇形，沿着扇形把圆柱切开再拼成一个近似的长方体，长方体的表面积比圆柱的表面积增加了600平方厘米．圆柱的体积是多少立方厘米？
<gadget id="calculator">600 / 2 / 30</gadget>
<output>10</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">3.14 * 100 * 30</gadget>
<output>9_420</output>

<result>9_420</result>