The formula A=3.14(R^2-r^2) , for R=45 mm and r=38mm , is ?

HighwayJohn asked Aug 23, 2023

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11 votes

HighwayJohn asked Aug 23, 2023

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25 votes

Answer:

1,824.34

Solving steps:

=> A=3.14(R² -r²)

=> 3.14(45² - 38²)

=> 3.14(2025 - 1444)

=> 3.14(581)

=> 1,824.34

Jeff Steil answered Aug 28, 2023

3.3k points

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