Cast a cylindrical steel with a base circumference of 25.12 cm and a height of 125 cm into a rectangular parallelepiped steel with a side length of 5 cm in cross section. How long can it be cast?
把一个底面周长是25.12厘米，高是125厘米的圆柱形钢材铸造成横截面是边长5厘米的正方形的长方体钢材，能铸造多长？
<gadget id="calculator">3.14 * 16 * 5</gadget>
<output>251.2</output>

<result>251.2</result>