Why is the most common ruler length 30cm, is there a reason for this? 615 viewsJanuary 3, 2024 Question90.96K February 27, 2021 0 Comments Why is the most common ruler length 30cm, is there a reason for this? In: Mathematics 5 Answers ActiveNewestOldest Anonymous Posted February 27, 2021 0 Comments 30 cm is almost 12 inches, which is 1 foot. Imperial units are corrupting your ruler sizes. As an american, I apologize. You are viewing 1 out of 5 answers, click here to view all answers. Register or Login
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