The lupu bridge in china is 12,795 ft long. the hart bridge in the usa is 3,845 ft long. about how much longer is the lupu bridge than the hart bridge? round each length to the nearest thousand to find the answer. (enter answer here) ft

lets do rounding!

12,795 is rounded to the nearest thousands = 13,000 ( rounded up )

3,845 is rounded to the nearest thousands = 4,000 ( rounded up )

so the difference is about :

13000-4000 = 9000ft

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step-by-step explanation:

i'm pretty sure it would take 20 hours because it's half the men so you multiply the number of hours it takes by 2