The height of a cylinder is 15 centimeters. If the height is reduced by 3 centimeters, the surface area is reduced by 94.2 square centimeters. What is the original volume of the cylinder in cubic centimeters?
一个圆柱体的高是15厘米，如果高减少3厘米，则表面积比原来减少了94.2平方厘米，原来圆柱体的体积是多少立方厘米．
<gadget id="calculator">94.2 / 3</gadget>
<output>31.4</output>

<gadget id="calculator">31.4 / 3.14 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25 * 15</gadget>
<output>1_177.5</output>

<result>1_177.5</result>