If both the diameter of the base of the cylinder and the height of the cylinder are tripled, how many times will the lateral area of the cylinder be enlarged?
圆柱体的底面直径和圆柱体的高都扩大3倍，那么该圆柱的侧面积扩大多少倍．
<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<result>9</result>