Define the term Capacity when determining the use of a facility. Use the following information to calculate the percentage of use on a tennis court. $(4$ points$)$

a$.$ The available time to reserve the tennis court each day is from $6$ am $($the first available time$)$ to $11$ pm$.($The facility closes at $11$ pm$.)$ Each time slot is one hour. i$.$ How many hours are available to reserve the court?$\_\_\_\_\_\_\_.$

ii$.$ At the end of the day, six court hours were reserved.

iii. What percent of the available court time was used?$\_\_\_\_\_\_\_.$