On a clock face, the hour hand is 5cm long, the minute hand is 1cm longer than the hour hand, the hour hand and the minute hand each make a circle, what is the difference in the area they sweep in cm**2.
一个钟面，时针长5cm，分针比时针长1cm，时针和分针各走一圈，它们扫过的面积相差多少cm**2．
<gadget id="calculator">5 + 1</gadget>
<output>6</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">3.14 * 36</gadget>
<output>113.04</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25</gadget>
<output>78.5</output>

<gadget id="calculator">113.04 - 78.5</gadget>
<output>34.54</output>

<result>34.54</result>