What Is the Rotational Inertia of a Solid Iron Disk

Multiple Choice

What is the rotational inertia of a solid iron disk of mass 41.0 kg with a thickness of 5.00 cm and radius of 30.0 cm, about an axis perpendicular to the disk and passing through its center?

A) 0.980 kg m²
B) 0.761 kg m²
C) 1.85 kg m²
D) 2.29 kg m²