The perimeter of a square is 4 times that of the rectangle, and the length of the rectangle is 6 cm, which is 4 cm more than the width. What is the side length of the square in cm?
一个正方形的周长是长方形的4倍，长方形的长是6厘米，比宽多4厘米，正方形的边长是多少厘米？
<gadget id="calculator">6 - 4</gadget>
<output>2</output>

<gadget id="calculator">6 + 2</gadget>
<output>8</output>

<gadget id="calculator">4 / 4</gadget>
<output>1</output>

<gadget id="calculator">8 * 2 * 1</gadget>
<output>16</output>

<result>16</result>