What is the main idea of the article, "Great Wall of China"?

Chemistry

1 answer:

grin007 [14]3 years ago

7 0

well, without the article, I'm guessing the main idea is about the Great Wall of China

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Explanation:

The cost of painting the circular traffic sign is given as 3.50 dollar per square feet. The diameter of the traffic sign is 36 inch, then its radius will be $\frac{36}{2} = 18$ inches.

But as the cost is given in unit of feet, we have to convert the radius from inches to feet.

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