If the radius of a circle increases from 6cm to 10cm, by how many square centimeters does the area of the circle increase?
一个圆的半径从6cm增加到10cm，圆的面积增加了多少平方厘米？
<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

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

<gadget id="calculator">100 - 36</gadget>
<output>64</output>

<gadget id="calculator">3.14 * 64</gadget>
<output>200.96</output>

<result>200.96</result>