Divide the upper and lower circles of a cylinder with a diameter of 8 cm into several equal parts along the radius, and then form a rectangle with the figure unfolded on the side. The area of this rectangle is 477.28 square centimeters. What is the height of the cylinder?
将一个直径8厘米的圆柱体的上下两个圆沿半径平均分成若干等份后，再与侧面展开的图形拼成一个长方形，这个长方形面积是477.28平方厘米，圆柱的高是多少
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16 * 2</gadget>
<output>100.48</output>

<gadget id="calculator">477.28 - 100.48</gadget>
<output>376.8</output>

<gadget id="calculator">3.14 * 8</gadget>
<output>25.12</output>

<gadget id="calculator">376.8 / 25.12</gadget>
<output>15</output>

<result>15</result>