Melt and cast a cylindrical steel material with a bottom diameter of 4 decimeters and a height of 3 decimeters to form a cylinder. If the bottom area of the cylinder is 2.512 square decimeters, what is the height of the cylinder?
把一个底面直径是4分米，高是3分米的圆柱形钢料熔铸成一个圆柱形，如果这个圆柱的底面积是2.512平方分米，那么圆柱的高是多少？
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3 / 2.512</gadget>
<output>1.194268</output>

<gadget id="calculator">3.14 * 4 * 1.194268</gadget>
<output>15.000006</output>

<result>15.000006</result>