Divide the base of a cylinder with a height of 9 cm into several small sectors with the same area, then cut the cylinder along the small sectors to form an approximate cuboid with the same base and height, and the surface area of this cuboid is larger than that of the cylinder Increased by 72 square centimeters, find the volume of the original cylinder.
把一个高为9厘米的圆柱底面分成若干个面积相等的小扇形，然后把这个圆柱沿着小扇形切开，拼成一个与它等底等高的近似长方体，这个长方体的表面积比圆柱的表面积增加了72平方厘米，求原来这个圆柱的体积．
<gadget id="calculator">72 / 2</gadget>
<output>36</output>

<gadget id="calculator">36 / 9</gadget>
<output>4</output>

<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 9</gadget>
<output>113.04</output>

<result>113.04</result>