The lateral area of a cylinder is 50.24 square centimeters. If the cylinder is sawn in half from the diameter to the height, by how many square centimeters will the surface area increase?
一个圆柱的侧面积是50.24平方厘米．如果从直径沿着高把圆柱锯成两半，表面积会增加多少平方厘米？
<gadget id="calculator">50.24 / 3.14</gadget>
<output>16</output>

<gadget id="calculator">16 * 2</gadget>
<output>32</output>

<result>32</result>