The side view of a cylinder is a square with a side length of 12.56 meters. What is the radius of the base of the cylinder in decimeters?
一个圆柱的侧面展开图是一个边长12.56米的正方形，这个圆柱的底面半径是多少分米
<gadget id="calculator">12.56 / 3.14 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 * 10</gadget>
<output>20</output>

<result>20</result>