If the height of a cylinder is increased by 25% and the area of the base is increased by 50%, what is the increase in volume?
一个圆柱高增加25%，底面积增加50%，体积增加多少．
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>