The lateral area of a cylinder is 50.24m**2, the radius of the bottom is 4m, what is its height in m?
一个圆柱的侧面积是50.24m**2，底面半径是4m，它的高是多少m．
<gadget id="calculator">3.14 * 4 * 2</gadget>
<output>25.12</output>

<gadget id="calculator">50.24 / 25.12</gadget>
<output>2</output>

<result>2</result>