Calculate the kinetic energies of two uniform solid cylinder

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Calculate the kinetic energies of two uniform solid cylinders, each rotating about its central axis. They have the same mass, 2.75 kg, and rotate with the same angular velocity, 215 rad/s, but the first has a radius of 0.25 m and the second a radius of 0.75 m.

a. Kinetic energy of the first cylinder?

b. Kinetic energy of the second cylinder?

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