A rectangle has a length of 37cm and a width of 24cm. Cut out the largest circle from this rectangle. What is the area of this circle?
一个长方形，长是37cm，宽是24cm，在这个长方形中剪去一个最大的圆，这个圆的面积是多少？
<gadget id="calculator">24 / 2</gadget>
<output>12</output>

<gadget id="calculator">12 ** 2</gadget>
<output>144</output>

<gadget id="calculator">3.14 * 144</gadget>
<output>452.16</output>

<result>452.16</result>