Solve the problem. Use ? = 3.14 when necessary.The foundation for a cylindrical storage shed is a cylinder 21 m in diameter and 5 m high. How many cubic meters of concrete are needed to build the foundation?
A. 6923.7 m3
B. 659.4 m3
C. 1730.9 m3
D. 3461.9 m3
Answer: C
Mathematics
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Find the curvature of the curve r(t).r(t) = (9t + 5)i - 10j + (5 - 
t2)k
A. ? = 9
B. ? = 
C. ? = 9
3/2
D. ? = 
Mathematics
Perform the indicated operations.2
- 9
A. 43
B. -7
C. -47
D. -43
Mathematics
Provide an appropriate response.Income tax tables are never changed.
A. True B. False
Mathematics
Solve.A recent advertisement claimed that 2 out of every 7 doctors recommend a certain herbal supplement to increase energy levels. If a local hospital employs 270 doctors, how many doctors would you expect to recommend the supplement? (Round your answer to the nearest whole number, if necessary.)
A. 77 doctors B. 39 doctors C. 3780 doctors D. 945 doctors
Mathematics