Use iron wire to add a hoop outside a cylindrical bucket with a radius of 25 cm, and use an extra 5 cm at the joint. How long is the wire needed in total?
用铁丝在一个半径25厘米的圆柱形水桶外面加一圈箍，接头处多用5厘米，共需要多长的铁丝．
<gadget id="calculator">3.14 * 2 * 25</gadget>
<output>157</output>

<gadget id="calculator">157 + 5</gadget>
<output>162</output>

<result>162</result>