Two small cylinders of steel are welded into a large cylinder with a length of 10 cm. The surface area of this large cylinder is 12.56 square centimeters less than the sum of the surface areas of the two small cylinders of steel. Question: What is the volume of this large cylindrical steel in cubic centimeters?
两个小圆柱形钢材焊接成一个长10厘米的大圆柱，这个大圆柱的表面积比两个小圆柱形钢材的表面积之和减少了12.56平方厘米．问：这个大圆柱形钢材的体积是多少立方厘米？
<gadget id="calculator">12.56 / 2</gadget>
<output>6.28</output>

<gadget id="calculator">6.28 * 10</gadget>
<output>62.8</output>

<result>62.8</result>