There are two cylinders A and B. If the height of A is equal to the diameter of the base of B, the volume of A will decrease (2/5). If the diameter of the base of B is equal to the height of A, the volume of B will increase by how many times.
有甲乙两个圆柱体，如果甲的高等于乙的底面直径，甲的体积将缩小(2/5)，如果乙的底面直径等于甲的高，乙的体积将增加多少倍．
<gadget id="calculator">16 / 9</gadget>
<output>16/9 = around 1.777778</output>

<result>16/9 = around 1.777778</result>