The length of a side of a square is 5 cm, and now the length of its side is increased by 1 cm, what is the area of the increase in square centimeters?
一个正方形的边长是5厘米，现在把它的边长增加1厘米，增加的面积是多少平方厘米．
<gadget id="calculator">5 + 1</gadget>
<output>6</output>

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

<gadget id="calculator">5 * 5</gadget>
<output>25</output>

<gadget id="calculator">36 - 25</gadget>
<output>11</output>

<result>11</result>