A cylindrical pool, the inner wall and bottom of the pool should be pasted with ceramic tiles, the inner diameter of the bottom of the pool is 8 meters, and the depth of the pool is 2.5 meters. How many square meters is the tiled area?
一个圆柱形水池，水池内壁和底面都要贴上瓷砖，水池底面内直径8米，池深2.5米．贴瓷砖的面积是多少平方米？
<gadget id="calculator">3.14 * 8 * 2.5</gadget>
<output>62.8</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<gadget id="calculator">62.8 + 50.24</gadget>
<output>113.04</output>

<result>113.04</result>