There is a rectangle whose perimeter is 24 centimeters and whose area is 20 square centimeters. So, how many centimeters is the length of the rectangle greater than the width?
有一个长方形的周长是24厘米，它的面积是20平方厘米．那么，这个长方形的长比宽多多少厘米．
<gadget id="calculator">10 - 2</gadget>
<output>8</output>

<result>8</result>