REAL QUICK question about how to solve for the period of a simple pendulum?

[riseofphoenix]

REAL QUICK question about how to solve for the period of a simple pendulum?

For part a, I tried using the formula: T = 2π√(L/g)

I did,

T = 2π√(53.4/9.8)
T = 2π√(5.44)
T = 2π(2.33)
T = 14.6 s

But that's wrong... Help please?

 

[Hypersphere]

What are the units of the length and for g?

 

[NascentOxygen]

For part a, I tried using the formula: T = 2π√(L/g)

I detect a hint you should do it differently:

makes 80.6 complete oscillations in 2.00 min[/size]