A cylindrical iron block with a base circumference of 15.7 cm and a height of 10 cm is melted and cast into a cone. If the base area of the cone is 25 cm2, what is its height in cm?
把一个底面周长15.7厘米，高10厘米的圆柱形铁块，熔铸成一个圆锥体，如果圆锥的底面积是25平方厘米，那么它的高是多少厘米？
<gadget id="calculator">15.7 / 3.14 / 2</gadget>
<output>2.5</output>

<gadget id="calculator">2.5 ** 2</gadget>
<output>6.25</output>

<gadget id="calculator">3 / 25</gadget>
<output>3/25 = around 0.12</output>

<gadget id="calculator">3.14 * 6.25 * 10 * (3/25)</gadget>
<output>23.55</output>

<result>23.55</result>