If the base area of a cylinder is 7.8 square decimeters and the height is 3 decimeters, what is the volume of a cone equal to its base and height in cubic decimeters?
一个圆柱的底面积是7.8平方分米，高是3分米，和它等底等高的圆锥体积是多少立方分米．
<gadget id="calculator">3 / 3</gadget>
<output>1</output>

<gadget id="calculator">7.8 * 1</gadget>
<output>7.8</output>

<result>7.8</result>