It also retained direct control over the Federal enclave, which encompasses 41 percent of the city's 69 square miles.

About 8 percent of Nassau County's 286.8 square miles is vacant land.

When its board voted in April to cut about 22 percent of the system's miles, eight states stepped up with money to avert cuts.

As a result, program members now earn only about 60 percent of their miles from flying, according to Inside Flyer.

New York State has about 18.5 percent of the basin's 12,755 square miles.

About 28 percent of the city's 5,800 miles of water mains were laid after 1950.

Its area has dwindled to about 40 percent of its original 99,000 square miles.

About 38 percent of the Cape's 412 square miles have been developed.

About 40 percent of Switzerland's 1,170 miles of borders are shared with Italy.

By the final raid on May 26, 50.8 percent of Tokyo's 111 square miles had been gutted.