Solve the problem.The shape and density of a thin shell are indicated below. Find the moment of inertia about the z-axis.Shell: "nose" of the paraboloid x2 + y2 = 2z cut by the plane z = 2Density: ? = 
A. Iz = 8?
B. Iz = 128?
C. Iz = ?
D. Iz = ?
Answer: A
Mathematics
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Simplify.(x-6)2
A. x12
B.
C.
D. x-4
Mathematics
Solve the problem.A 30-m-long chain hangs vertically from a cylinder attached to a winch. Assume there is no friction in the system and that the chain has a density of 10 kg/m. How much work is required to wind the entire chain onto the cylinder using the winch?
A. 8850g J B. 9000g J C. 4500g J D. 300g J
Mathematics
Decide whether the figure shown is a polyhedron.
A. Polyhedron B. Not a polyhedron
Mathematics
Evaluate the expression.3
A.
B. 3
C.
D.
Mathematics