The magnitude of the acceleration due to gravity is about [tex]g=9.8[/tex] m/s^2. The question is asking you to compute 3.6 times this value. So
[tex]3.6g=3.6\left(9.8\,\dfrac{\mathrm m}{\mathrm s^2}\right)=35.28\,\dfrac{\mathrm m}{\mathrm s^2}[/tex]
