Solve the problem.Find the diameter.
A. 23 cm
B. 20 cm
C. 40 cm
D. 10 cm
Answer: C
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Solve the problem.Find the centroid of the half-sphere formed by rotating the first-quadrant area under the curve 
(measurements in inches) about the y-axis.
A. 4.5 in. above the center of the base B. 3.75 in. above the center of the base C. 3 in. above the center of the base D. 2.25 in. above the center of the base
Write the partial fraction decomposition of the rational expression.
A. 
+ 
B. 
+ 
+ 
C. 
+ 
D. 
+ 
+ 
Solve the problem.A rectangular sheet of perimeter 24 cm and dimensions x cm by y cm is to be rolled into a cylinder as shown in part (a) of the figure. What values of x and y give the largest volume?
A. x = 8 cm; y = 4 cm B. x = 10 cm; y = 2 cm C. x = 9 cm; y = 3 cm D. x = 7 cm; y = 5 cm
Solve the linear programming problem.Maximize and minimize z = 13x + 2y subject to: x ? 0,
y ? 0,
2x + 3y ? 6,
x ? 10,
y ? 5.
A. maximum: 140; minimum: 130 B. maximum: 140; minimum: 4 C. maximum: 130; minimum: 6 D. maximum: 10; minimum: 6