Solve the problem.The disk (x - 4)2 + y2 ? 1 is revolved about the y-axis to generate a torus. Find its volume. (Hint: 
= 
?, since it is the area of a semicircle of radius 1.)
A. 8?2
B. 2?2
C. 4?2
D. 4?
Answer: A
Mathematics
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Solve the proportion equation.
= 
A. 15
B. 126
C. 21
D. 
Mathematics
Find the domain of the function h.h(x) = 
A. {x| x is a real number and x ? -9 and x ? -7 and x ? 7} B. {x| x is a real number and x ? 9 and x ? -7 and x ? 7 and x ? 0} C. {x| x is a real number and x ? -7 and x ? 7} D. {x| x is a real number and x ? 0}
Mathematics
Draw the angle in standard position.- 
A. 
B. 
C. 
D. 
Mathematics
Find the product. Reduce answer to lowest terms.
? 
A. 
B. 
C. 
D. 
Mathematics