A cylindrical container with a base radius of 6 cm is completely submerged in a cone with a height of 9 cm. When the cone is taken out, the water level drops by 0.5 cm. Calculate the area of the base of the cone.
一个底面半径6厘米的圆柱形容器里完全淹没了一个高为9厘米的圆锥形，把圆锥体拿出后水面降低0.5厘米，求圆锥底面积．
<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">3.14 * 36 * 0.5</gadget>
<output>56.52</output>

<gadget id="calculator">3 / 9</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">56.52 * (1/3)</gadget>
<output>18.84</output>

<result>18.84</result>