please help I have tried for 5 hours and I have not been able to figure it out it is over due for a few minutes, please help. I am literally about to cry, I have not been able to do this

Answer:
a)55.04 ft
b) 9184.5 ft
c) 75.36 in
d)38.465 yd
Step-by-step explanation:
i put it in the image hope it helps