A cylindrical machine part. The radius of the base is 2 cm. The lateral area is 62.8 square centimeters. What is the height of the part?
一个圆柱形机器零件．底面半径是2厘米．侧面积是62.8平方厘米．求零件的高是多少？
<gadget id="calculator">62.8 / 3.14 / 2 / 2</gadget>
<output>5</output>

<result>5</result>