A biscuit packaging box, its surface area is 423 square centimeters, its height is 30 centimeters, and its bottom area is what?
According to the current conditions of the topic, there is no answer. If 423 is the volume of the biscuit box, the bottom area is 423/30= 14. 1 cm2. Or add a condition that the bottom surface is square and the side length of the bottom surface is a, then a2+60a=423. Find the side length and then the area.