Bertrand Swimming Rafts

text 8-foot X 8-foot raft 8-foot X 10-foot raft 28 po x 20 ft 4 ft x 10 ft 4 ft x 15 ft 4 ft x 20 ft 5 ft x 10 ft 5 ft x 15 ft 5 ft x 20 ft 6 ft x 10 ft 6 ft x 15 ft 6 ft x 20 ft 8 ft x 10 ft 8 ft x 15 ft 8 ft x 20 ft