The area of the base of a cone is 4.5 decimeters and the height is 3 decimeters. What is the volume of the cone?
一个圆锥的底面积是4.5分米，高3分米，这个圆锥的体积是多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) * 4.5 * 3</gadget>
<output>4.5</output>

<result>4.5</result>