The ratio of length to width of a rectangle is 5:3, and the length is 8 cm more than the width, what is its perimeter in cm?
一个长方形的长、宽的比是5：3，且长比宽多8厘米，则它的周长是多少厘米．
<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">5 * 4</gadget>
<output>20</output>

<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<gadget id="calculator">20 + 12</gadget>
<output>32</output>

<gadget id="calculator">32 * 2</gadget>
<output>64</output>

<result>64</result>