Expand the side of a cylinder along the height to obtain a square with a side length of 94.2 cm. What is the radius of the base of this cylinder in cm?
把一个圆柱的侧面沿高展开，得到一个边长是94.2厘米的正方形，这个圆柱的底面半径是多少厘米．
<gadget id="calculator">94.2 / 3.14 / 2</gadget>
<output>15</output>

<result>15</result>