A cylinder with a height of 10dm is cut into several equal sectors at the bottom, and then assembled into an approximate cuboid. The surface area of the cuboid is 60dm**2 larger than that of the original cylinder. What is the volume of the original cylinder?
把一个高为10dm的圆柱体切成底面是若干个相等的扇形，再拼成一个近似的长方体，长方体的表面积比原来圆柱的表面积增加了60dm**2，原来圆柱体的体积是多少．
<gadget id="calculator">60 / 2 / 10</gadget>
<output>3</output>

<gadget id="calculator">3 * 3 * 3.14 * 10</gadget>
<output>282.6</output>

<result>282.6</result>