If the circumference of the base of a cylinder is (1/3) that of a cone, and the height of the cone is (1/4) the height of the cylinder, then the volume of the cone is the volume of the cylinder.
一圆柱的底面周长是一圆锥的底面周长的(1/3)，而这个圆锥的高是圆柱的高的(1/4)，则圆锥的体积是圆柱体积的多少．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>