When a cylinder is shortened by 3cm, the surface area is reduced by 37.68cm**2, and the volume is reduced by how many cm**3.
把一个圆柱体截短3cm后，表面积减少37.68cm**2，体积减少了多少cm**3．
<gadget id="calculator">37.68 / 3 / 3.14 / 2</gadget>
<output>2</output>

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

<gadget id="calculator">3.14 * 4 * 3</gadget>
<output>37.68</output>

<result>37.68</result>