A and B start from both ends of the diameter AB of the circular runway at the same time and walk toward each other. They meet at C, 90 meters away from A. They continue to move forward, and meet again at D, 113 meters away from B. What is the area of the circle in square meters?
甲、乙两人分别从圆形跑道直径AB两端同时出发相向而行，在离A地90米的C地相遇，两人继续前进，再一次相遇在离B地113米的D处，这个圆形的面积是多少平方米？
<gadget id="calculator">90 * 3</gadget>
<output>270</output>

<gadget id="calculator">270 - 113</gadget>
<output>157</output>

<gadget id="calculator">157 * 2</gadget>
<output>314</output>

<gadget id="calculator">314 / 3.14 / 2</gadget>
<output>50</output>

<gadget id="calculator">50 ** 2</gadget>
<output>2_500</output>

<gadget id="calculator">2_500 * 3.14</gadget>
<output>7_850</output>

<result>7_850</result>