Solve the problem.Find the area of the shaded region. Express the answer in terms of ?. 
A. 8? - 16 square units
B. 4?- 4 square units
C. 16 square units
D. 4?- 16 square units
Answer: A
Mathematics
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Solve. Use ? = 3.14 and round your answer to the nearest hundredth.A manhole cover has a diameter of 24 in. What is the length of the brass grip-strip that encircles the rim of the cover making it easier to manage?
A. 37.68 in. B. 452.16 in. C. 75.36 in. D. 150.72 in.
Mathematics
Provide an appropriate response.Write 12 as an improper fraction.
A. 
B. 
C. 
D. 
Mathematics
Solve the proportion.
= 
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operations and simplify.
A. 
B. 
C. 
D. 
E. 
Mathematics