Questions 5-8 I'm very confused on this Determine which tables are linear and tell me the slope for each

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?

If the perimeter of the square equals the perimeter of the regular pentagon. each side of a pentagon is 16cm long. how long is each side of the square?