The perimeter of the base of a circular cake box is 94.2 meters, what is its area?
一个圆形蛋糕盒的底面周长是94.2米，它的面积是多少？
<gadget id="calculator">94.2 / 2 / 3.14</gadget>
<output>15</output>

<gadget id="calculator">15 ** 2</gadget>
<output>225</output>

<gadget id="calculator">3.14 * 225</gadget>
<output>706.5</output>

<result>706.5</result>