The height of a cylinder increases by 3.5 cm and its volume increases by 49 cubic centimeters. What is the area of the base of this cylinder in square centimeters?
一个圆柱的高增加3.5cm，体积增加了49立方厘米．这个圆柱的底面积是多少平方厘米．
<gadget id="calculator">49 / 3.5</gadget>
<output>14</output>

<result>14</result>