A circular flower bed is 24m in diameter and has a circular sidewalk around it that is 4m wide. Find the area of the sidewalk in square meters. Use 3.14 for pi.

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

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Combine the information in the problem and the chart using the average balance method to solve the problem.