Solve the problem.Integrate 
over the region 0 ? x2 + y2 ? 16.
A. 2?(1 - cos 16)
B. 2?(1 - cos2 4)
C. ?(1 - cos 16)
D. ?(1 - cos2 4)
Answer: C
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Find the volume of the described solid.The base of a solid is the region between the curve y = 3cos x and the x-axis from x = 0 to x = ?/2. The cross sections perpendicular to the x-axis are isosceles right triangles with one leg on the base of the solid.
A. 
?
B. 2?
C. 
?
D. 
?
Convert the numeral to a numeral in base 10.647
A. 322 B. 448 C. 46 D. 70
Provide an appropriate response.A ball rebounds 
of its previous height after each bounce. If the ball is dropped from a height of 20 meters, how far has it traveled in the air when it hits the ground for the sixth time?
Fill in the blank(s) with the appropriate word(s).
Solve the problem.The sum of three consecutive even integers is 174. Find the integers.
A. 58, 60, 62 B. 60, 62, 64 C. 56, 58, 60 D. 51, 52, 53