Wire guardrail billboard
⓵Use iron sheets to make a rectangular billboard frame that is 20 decimeters long, 10 decimeters wide and 6 decimeters high.
The sum of the edge lengths = 4×(20+10+6)=144 points meters;
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;< br/>At least 7.6 square meters of advertising paper is required
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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;< br/>At least 7.6 square meters of advertising paper is required
If you don’t understand anything about this question, you can ask. If you are satisfied, remember to accept it
If you have other questions, please accept this question and click to ask me for help. It is difficult to answer the question, please understand, thank you.
Wish you progress in your studies