cylindrical glass jar. The diameter of the base circle is 4 decimeters. There is water in it. If put in a base radius is 1 decimeter. A cone with a height of 1.5 decimeters. The water does not overflow when the cone is completely submerged in water. How many decimeters did the water level in the glass tank rise?
一个圆柱形玻璃缸．底面圆的直径是4分米．里面盛了水．若放入一个底面半径是1分米．高是1.5分米的圆锥．圆锥全部浸没在水中后水没有溢出．玻璃缸内的水面升高了多少分米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

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

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

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

<gadget id="calculator">1.5 / 12.56</gadget>
<output>0.119427</output>

<gadget id="calculator">(1/3) * 3.14 * 1 * 0.119427</gadget>
<output>0.125</output>

<result>0.125</result>