A rectangle with a length of 10 cm, if the length is increased by 4 cm, the area will increase by 24 cm2, what is the perimeter of the rectangle in cm?
一个长10厘米的长方形，若长增加4厘米，则面积增加24平方厘米，这个长方形的周长是多少厘米？
<gadget id="calculator">24 / 4</gadget>
<output>6</output>

<gadget id="calculator">10 + 4 + 6</gadget>
<output>20</output>

<gadget id="calculator">20 * 2</gadget>
<output>40</output>

<result>40</result>