Each mobile home park shall provide a useable common recreation area within the boundaries of the park, subject to all of the following provisions.
(a) The total amount of land to be set aside for recreation purposes shall not be less than ten (10) per cent of the gross area of the mobile home park.
(b) The recreation area may be composed of more than one specific area.
(c) The recreation area may consist of open land, or land set aside for tennis courts, putting greens, swimming pools, clubhouses, and similar structures, or any combination of such recreational facilities.