Solve the problem. Use ? ? 3.14.The foundation for a cylindrical water tank is a cylinder 21 m in diameter and 3 m high. What volume of concrete is needed to build the foundation? Round your answer to the nearest tenth if necessary.
A. V ? 4154.2 m3
B. V ? 2077.1 m3
C. V ? 395.6 m3
D. V ? 1038.6 m3
Answer: D
Mathematics
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Find the volume of the indicated region.the tetrahedron bounded by the coordinate planes and the plane 
A. 16 B. 24 C. 8 D. 12
Mathematics
Perform the indicated operation.
(Round to the nearest hundredths when necessary.)
A. 2.79 B. 0.23 C. 2.29 D. 0.28
Mathematics
Convert the angle in degrees to radians. Express the answer as multiple of ?.135°
A. 
B. 
C. 
D. 
Mathematics
Find a rational function that satisfies the given conditions. Answers may vary, but try to give the simplest answer possible.Vertical asymptote x = 3, hole at x = 2, x-intercept (1, 0), and end behavior model q(x) = x + 1
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 
Mathematics