Divide the bottom of a cylinder with a base diameter of 4 cm into many equal sectors, and then cut it along the diameter to form a cuboid equal to its volume. The surface area of this cuboid is 20 square centimeters larger than the surface area of the original cylinder. This cuboid What is the volume in cubic centimeters?
把一个底面直径是4厘米的圆柱底面分成许多相等的扇形，然后沿着直径切开，拼成一个和它体积相等的长方体，这个长方体的表面积比原来圆柱的表面积增加了20平方厘米，这个长方体的体积是多少立方厘米？
<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">3.14 / 2</gadget>
<output>1.57</output>

<gadget id="calculator">4 * 1.57</gadget>
<output>6.28</output>

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

<result>62.8</result>