A cylinder with a height of 8 cm is cut through the bottom and along the height to form an approximate rectangle. The surface area is increased by 48 cm2. What is the volume of the original cylinder in cubic centimeters?
一个高为8厘米的圆柱体，过底面圆形沿高切开拼成一个近似的长方形，表面积增加了48平方厘米，则原来圆柱的体积是多少立方厘米．
<gadget id="calculator">48 / 2 / 8</gadget>
<output>3</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) ** 2</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">3.14 * (9/4) * 8</gadget>
<output>56.52</output>

<result>56.52</result>