cylindrical copper block with a base radius of 3 cm and a height of 9 cm is melted and cast into a cone of equal height and base circumference of 18.84 cm. How many such cones can be made in total?
将一个底面半径是3厘米，高是9厘米的圆柱形铜块熔铸成等高底面周长是18.84厘米的圆锥体，共能做多少个这样的圆锥体？
<gadget id="calculator">18.84 / 3.14 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

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

<gadget id="calculator">(1/3) * 3.14 * 9 * 9</gadget>
<output>84.78</output>

<gadget id="calculator">9 / 84.78</gadget>
<output>0.106157</output>

<gadget id="calculator">3.14 * 9 * 0.106157</gadget>
<output>2.999997</output>

<result>2.999997</result>