Find the volume of the described solid.The base of a solid is the region between the curve y = 6cos 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. 9?
C. 
?
D. 3?
Answer: C
Mathematics
You might also like to view...
Solve the problem.A rock is thrown vertically upward from the surface of an airless planet. It reaches a height of 
meters in t seconds. How high does the rock go? How long does it take the rock to reach its highest point?
A. 360 m, 6 sec B. 714 m, 6 sec C. 1,320 m, 12 sec D. 720 m, 12 sec
Mathematics
Solve the problem.Find the centroid of a hemispherical shell having outer radius 10 and inner radius 5 if the density is constant.
A. 
= 0, 
= 0, 
= 
B. 
= 0, 
= 0, 
= 
C. 
= 0, 
= 0, 
= 
D. 
= 0, 
= 0, 
= 
Mathematics
Solve the equation.
- 
= 1
A. ? B. {-3, -1} C. {3} D. {3, -1}
Mathematics
Find an equation of the line that fits the description.Passes through (4, -7) and has undefined slope
A. y = 4 B. x = -7 C. y = -7 D. x = 4
Mathematics