A conical object has a base radius of 3 cm and a height of 6 cm. The iron block weighs 7.8 grams per cubic meter. How many grams does this part weigh? (Retain integers)
一个圆锥形零件，底面半径3厘米，高6厘米．每立方米铁块重7.8克，这个零件重多少克？(得数保留整数)
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">(1/3) * 3.14 * 9 * 6 * 7.8</gadget>
<output>440.856</output>

<result>440.856</result>