A cylinder, the ratio of radius to height is 4:5. Divide the bottom of this cylinder into many equal small sectors, cut them and put them together to form an approximate cuboid. The length of the cuboid is 8.56cm more than the width. What is the volume of this cylinder?
一圆柱，半径与高的比是4：5，将这个圆柱的底面分成许多相等的小扇形，切开拼成一个近似长方体，长方体的长比宽多8.56cm，这个圆柱的体积是多少．
<gadget id="calculator">3.14 - 1</gadget>
<output>2.14</output>

<gadget id="calculator">8.56 / 2.14</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">3.14 * 16 * 4 * (5/4)</gadget>
<output>251.2</output>

<result>251.2</result>