A circle with a radius of 5 cm is cut out of a circular piece of paper with a radius of 10 cm. What is the area of the remaining piece of paper in square centimeters?
在一个半径为10厘米的圆形纸片中，剪去一个半径是5厘米的圆．剩下的纸片面积是多少平方厘米？
<gadget id="calculator">3.14 * 100</gadget>
<output>314</output>

<gadget id="calculator">3.14 * 25</gadget>
<output>78.5</output>

<gadget id="calculator">314 - 78.5</gadget>
<output>235.5</output>

<result>235.5</result>