Please help me

Sally sits and observes an ocean wave
A. She times waves and finds that it takes 32.8 s for 6.00 waves to pass by. What is the period of
the wave?

B. What is the frequency of the wave?

C. She also notices that there is a distance of 1.82 m between crests. What is the wavelength of
the wave?

D. Finally, she records that from the highest point on a wave to the lowest point is a distance of
0.742 m. What is the amplitude of the wave?

E. Calculate the velocity of the wave.