Cut a cube billet with an edge length of 4 decimeters into the largest cylinder, what is the radius of the bottom surface of this cylinder in decimeters
把一个棱长是4分米的正方体钢坯削成一个最大的圆柱，这个圆柱的底面半径是多少分米
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<result>2</result>