If a cylinder is cut into sections parallel to the bottom surface, the surface area will be 884 square meters. The original one is 20 cm. What is the surface area of a circle?
个圆柱沿与底面平行切成段，表面积就加884平方，原来的是20厘米，个圆的表面多少？
<gadget id="calculator">1_884 / 6</gadget>
<output>314</output>

<gadget id="calculator">314 * 2</gadget>
<output>628</output>

<gadget id="calculator">3.14 * 10 * 2 * 20</gadget>
<output>1_256</output>

<gadget id="calculator">628 + 1_256</gadget>
<output>1_884</output>

<result>1_884</result>