The height of a cylinder is 18.84 cm, and its side view is a square. What is the area of the base of the cylinder in square centimeters?
一个圆柱的高是18.84厘米，它的侧面展开图是一个正方形，这个圆柱的底面积是多少平方厘米．
<gadget id="calculator">18.84 / 3.14 / 2</gadget>
<output>3</output>

<gadget id="calculator">3.14 * 3 * 3</gadget>
<output>28.26</output>

<result>28.26</result>