The school wants to build a wall between the teaching area and the playground, originally planned to use 35m of earth and stone**3. Later, an additional moon gate was opened. The ring width of the moon gate is 0.25 meters and the diameter is 2 meters. Reduced the amount of soil and rock. How many cubic meters of soil and rock are used now? (The moon gate is cylindrical)
学校要在教学区和操场之间修一道围墙，原计划用土石35m**3．后来多开了一个月亮门，月亮门的环宽0.25米，直径2米．减少了土石的用量．现在用了多少立方米的土石？(月亮门是圆柱形)
<gadget id="calculator">2 / 2</gadget>
<output>1</output>

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

<gadget id="calculator">3.14 * 1 * 0.25</gadget>
<output>0.785</output>

<gadget id="calculator">35 - 0.785</gadget>
<output>34.215</output>

<result>34.215</result>