To make a round tabletop with a diameter of 1.2 meters, if the price of wooden boards per square meter is 100 yuan, how much is the minimum cost to make this tabletop?
做一个直径1.2米的圆桌面，如果每平方米木板价格100元，做这个桌面至少需要多少钱？
<gadget id="calculator">1.2 / 2</gadget>
<output>0.6</output>

<gadget id="calculator">0.6 ** 2</gadget>
<output>0.36</output>

<gadget id="calculator">3.14 * 0.36 * 100</gadget>
<output>113.04</output>

<result>113.04</result>