A circular conference hall has a diameter of 12 meters. The floor of the conference hall is paved with granite. If the cost per square meter is 100 yuan, how much is the floor of the entire conference hall?
一个圆形的会议厅，厅内的直径为12米，会议厅的地面是用花岗岩铺的，如果每平方米的造价是100元，整个会议厅的地面共需多少元？
<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">3.14 * 36 * 100</gadget>
<output>11_304</output>

<result>11_304</result>