A cylindrical granary has a base radius of 3m and a height of 3m. If each cubic meter of corn weighs 240kg, how many kilograms of corn can this granary hold at most?
一个圆柱形的粮仓，底面半径是3m，高是3m．如果每立方米玉米重240kg，这个粮仓最多可装玉米多少kg？
<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9 * 3 * 240</gadget>
<output>20_347.2</output>

<result>20_347.2</result>