Solve the problem.Find the area of the circular racetrack. Use 3.14 as an approximation for ? and round to the nearest square foot.
A. 45,216 ft2
B. 70,650 ft2
C. 25,434 ft2
D. 11,304 ft2
Answer: C
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Solve the problem.A square plate 2 m on a side is placed on a vertical wall 2 m below the surface of a pool filled with water. On which plate in the figure is the force greater? Try to anticipate the answer and then compute the force on each plate. Round to three decimal places when appropriate. 
A. plate 2 plate 1: 117,600 N plate 2: 133,837.172 N B. plate 2 plate 1: 58,800 N plate 2: 66,918.586 N C. plate 1 plate 1: 66,918.586 N plate 2: 58,800 N D. plate 1 plate 1: 133,837.172 N plate 2: 117,600 N
Answer the question.An average newspaper contains at least 16 pages and at most 87 pages. How many newspapers must be collected to be certain that at least two newspapers have the same number of pages?
A. 73 newspapers B. 70 newspapers C. 71 newspapers D. 72 newspapers
Multiply and write the product as a mixed number in simplest form.-10 ? 
A. - 
B. -70
C. -5
D. 
Solve the problem.The amount of money in an account is given by 
where P is the principal invested, r is the interest rate (as a decimal), and t is the time of the investment. Find the amount at the end of 2 years if $600 is invested at 5%. Round to the nearest cent.
A. $1,350.00 B. $630.00 C. $900.00 D. $661.50