A cone and a cylinder have the same base area and volume. If the height of the cone is 2.1 decimeters, what is the height of the cylinder in decimeters?
一个圆锥和一个圆柱的底面积与体积都相等，如果圆锥的高是2.1分米，那么圆柱的高是多少分米．
<gadget id="calculator">2.1 / 3</gadget>
<output>0.7</output>

<result>0.7</result>