A rectangle has the same perimeter as a square. A rectangle is 10 meters long and 6 meters wide, find the area of the square.
一个长方形与一个正方形的周长相等．长方形长10米，宽6米，求正方形面积．
<gadget id="calculator">10 + 6</gadget>
<output>16</output>

<gadget id="calculator">16 * 2</gadget>
<output>32</output>

<gadget id="calculator">32 / 4</gadget>
<output>8</output>

<gadget id="calculator">8 * 8</gadget>
<output>64</output>

<result>64</result>