Square billboard renderings

本文目录一览How to design a square billboard

The bottom area is a2, so the height is h=v/a2, so the area of ​​the four sides is h*a=v/a, so the box The outer surface area is S1=a24*v/a; 2) The bottom area is b*c, so the height is h=v/(b*c), so the two areas on the side are b*h=v/c, there are The two are c*h=v/b, so the outer area of ​​the box is S2=b*c2*v/c2*v/b; 3) The bottom areas are equal, which means a2=b*c, so the outer area difference is S1-S2 =4*v/a-2*v/b-2*v/c, depending on the situation, set the absolute value

I want to open a fruit shop and ask experts to help design a billboard. It is square and the size is 1 meter. The name is Sunshine Orchard
Sunshine Orchard integrity comes first, money comes second

Use iron sheets to make a square billboard with a circumference of 120 decimeters. To make such a billboard, what is the minimum square footage required?
The sum of the edge lengths = 4×(20+10+6)= 144 decimeters;
So at least 144 decimeters of iron wire are needed;
Surface area = 2×(20×10+20×6+10×6)=760 square decimeters=7.6 square meters;
At least 7.6 square meters of advertising paper is required
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