A cylinder whose side view is a square and its height is 12.56 cm, what is the radius of its base in cm?
一个圆柱，侧面展开图是正方形，它的高是12.56厘米，那么它的底面半径是多少厘米．
<gadget id="calculator">12.56 / 3.14 / 2</gadget>
<output>2</output>

<result>2</result>