The circumference of the base of a cylinder is (2/3) the circumference of the base of a cone, and the height of the cone is (2/5) the height of the cylinder. What fraction of the volume of the cone is the volume of the cylinder?
一个圆柱底面周长是一个圆锥底面周长的(2/3)，而这个圆锥的高是圆柱高的(2/5)，圆锥的体积是圆柱体积的几分之几？
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<result>3/10 = around 0.3</result>