The radius of the small circle is 2 cm and the radius of the large circle is 6 cm. What is the area of the small circle equal to the area of the large circle?
小圆的半径2厘米，大圆的半径6厘米，小圆的面积是大圆面积的多少．
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

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

<gadget id="calculator">3.14 * 36</gadget>
<output>113.04</output>

<gadget id="calculator">12.56 / 113.04</gadget>
<output>0.111111</output>

<result>0.111111</result>