The expanded diagram of the lateral area of a cylinder is a square, and the perimeter of the square is 75.36 centimeters. What is the radius of the base of the cylinder in centimeters?
一个圆柱的侧面积展开图是一个正方形，正方形的周长是75.36厘米，这个圆柱的底面半径是多少厘米？
<gadget id="calculator">75.36 / 4</gadget>
<output>18.84</output>

<gadget id="calculator">18.84 / 3.14 / 2</gadget>
<output>3</output>

<result>3</result>