log has a base circumference of 72.22 centimeters, what is its base area in square centimeters?
一根圆木，量得底面周长是72.22厘米，它的底面积是多少平方厘米？
<gadget id="calculator">72.22 / 3.14 / 2</gadget>
<output>11.5</output>

<gadget id="calculator">11.5 ** 2</gadget>
<output>132.25</output>

<gadget id="calculator">3.14 * 132.25</gadget>
<output>415.265</output>

<result>415.265</result>