Determination of acceleration due to gravity!?

I am facing a problem regarding my home work in which it is required to find out the value of g with the help of some given information. Here, the diameter of the bob of simple pendulum and the length of suspension are given along with the angular amplitude 4 degree. The diameter is 0.60 cm and the effective length is 99 cm. How can I determine the value of g without knowing the time period then?