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. 
?
C. 
?
D. 2?
Answer: A
Mathematics
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Solve the problem.Let D be the smaller cap cut from a solid ball of radius 8 units by a plane 5 units from the center of the sphere. Set up the triple integral for the volume of D in cylindrical coordinates.
A. 
B. 
C. 
D. 
Mathematics
This graph is a __________ graph.
A. histogram B. frequency polygon C. bar D. line
Mathematics
Solve. Give your answer as a mixed number if appropriate.
= 
A. 
B. 198
C. 14
D. 22
Mathematics
Find the quotient.-459 ÷ 51
A. - 
B. -19
C. 9
D. -9
Mathematics