Explanation:
The tallest national monument in America, it is a legendary engineering triumph, designed by Finnish-born architect Eero Saarinen. As part of the Jefferson National Expansion Memorial, the Gateway Arch serves to commemorate the accomplishments of 19th-century westward pioneers and celebrate the city’s role as the ‘Gateway to the West.’
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Answer:
54.5
Step-by-step explanation:
Answer: 439.82
Step-by-step explanation:
C=2πr=2·π·70≈439.82297
