There are two circles, big and small. The area of the small circle is 50 square centimeters. The diameter of the large circle is 20% larger than that of the small circle. The area of the large circle is larger than the area of the small circle by how many square centimeters.
有大小两个圆纸片，小圆纸片的面积是50平方厘米，大圆纸片的直径比小圆纸片大20%，大圆纸片的面积比小圆纸片的面积大多少平方厘米．
<gadget id="calculator">1.2 ** 2</gadget>
<output>1.44</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">1.44 - 1</gadget>
<output>0.44</output>

<gadget id="calculator">0.44 / 1</gadget>
<output>0.44</output>

<gadget id="calculator">50 * 0.44</gadget>
<output>22</output>

<result>22</result>