A cylinder and a cone have the same base area and height, but the difference in volume is 45 cubic decimeters. What is the volume of the cylinder?
一个圆柱和一个圆锥底面积和高相等，体积相差45立方分米，圆柱的体积是多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">45 / (2/3)</gadget>
<output>135/2 = around 67.5</output>

<result>135/2 = around 67.5</result>