If a cylindrical steel material with a length of 1 meter and a circumference of 9.42 decimeters is cut into two small cylinders, how much is the surface area increased?
把一根长1米，底面周长为9.42分米的圆柱形钢材截成2个小圆柱，表面积增加了多少．
<gadget id="calculator">9.42 / 3.14 / 2</gadget>
<output>1.5</output>

<gadget id="calculator">1.5 ** 2</gadget>
<output>2.25</output>

<gadget id="calculator">3.14 * 2.25 * 2</gadget>
<output>14.13</output>

<result>14.13</result>