-The volume of a cone is 30cm**3, what is the volume of a cylinder with the same base and height in cm**3.
-个圆锥的体积是30cm**3，与它等底等高的圆柱的体积是多少cm**3．
<gadget id="calculator">30 * 3</gadget>
<output>90</output>

<result>90</result>