A cylinder is 8 centimeters high, if its height increases by 2 centimeters, then its surface area increases by 12.56 square centimeters, what is the surface area of the original cylinder in square centimeters? (The value of π is 3.14)
一个圆柱体高8厘米，如果它的高增加2厘米，那么它的表面积增加12.56平方厘米，则原圆柱体的表面积是多少平方厘米．(π的值取3.14)
<gadget id="calculator">12.56 / 2 / 3.14 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1 * 2</gadget>
<output>6.28</output>

<gadget id="calculator">12.56 / 2</gadget>
<output>6.28</output>

<gadget id="calculator">6.28 * 8</gadget>
<output>50.24</output>

<gadget id="calculator">6.28 + 50.24</gadget>
<output>56.52</output>

<result>56.52</result>