A conical billet with a height of 9 cm is immersed in a cylindrical bucket with a bottom area of 28.26 cm2, and the water level rises by 2 cm. What is the area of the bottom of this conical billet in square centimeters?
把一块高为9cm的圆锥形钢坯浸在一个底面积为28.26平方厘米的圆柱形水桶内，水面上升了2厘米．这个圆锥形钢坯底面积是多少平方厘米？
<gadget id="calculator">3 / 9</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">28.26 * 2 * (1/3)</gadget>
<output>18.84</output>

<result>18.84</result>