If the volume of a cone is 120 cubic centimeters and the height is 4 centimeters, what is the area of its base in square centimetres?
圆锥体积是120立方厘米，高是4厘米，则它的底面积是多少平方厘米．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">120 * (3/4)</gadget>
<output>90</output>

<result>90</result>