Cut a cone vertically along the diameter of the bottom surface, the surface area increases by 48cm**2, its height is known to be 6cm, find its volume.
把一个圆锥沿底面直径竖直切开，表面积增加了48cm**2，已知它的高是6cm，求它的体积．
<gadget id="calculator">48 / 2 / 6</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 * 6</gadget>
<output>75.36</output>

<result>75.36</result>