The school has newly built a circular flower bed with a diameter of 10 meters. Now it is necessary to build a cement path with a width of 2 meters around this circular flower bed. If 5 kg of cement is needed per square meter, how much cement is needed to pave this road?
学校新修了一个直径是10米的圆形花坛，现在要在这个圆形花坛的周围修一条宽为2米的水泥小路，如果每平方米需要水泥5千克，铺这条路需要水泥多少千克？
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 + 2</gadget>
<output>7</output>

<gadget id="calculator">7 ** 2</gadget>
<output>49</output>

<gadget id="calculator">3.14 * 49</gadget>
<output>153.86</output>

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

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

<gadget id="calculator">153.86 - 78.5</gadget>
<output>75.36</output>

<gadget id="calculator">75.36 * 5</gadget>
<output>376.8</output>

<result>376.8</result>