The side view of a cylinder is a square with a side length of 25.12 cm. What is the radius of the base of the cylinder in cm?
一个圆柱的侧面展开图是一个边长为25.12厘米的正方形，这个圆柱的底面半径是多少厘米．
<gadget id="calculator">25.12 / 3.14 / 2</gadget>
<output>4</output>

<result>4</result>