A very light rigid rod with a length of 0.500 m extends straight out from one end

Question:

A very light rigid rod with a length of 0.500 m extends straight out from one end of a meter stick. The stick is suspended from a pivot at the far end of the rod and is set into oscillation.
(a) Determine the period of oscillation.
Suggestion: Use the parallel-axis theorem from Section 10.5.
(b) By what percentage does the period differ from the period of a simple pendulum 1.00 m long?