Provo, Utah is 26% larger than Manchester, New Hampshire.
Area: 90 km2 calculated
Manchester is the largest city in the U.S. state of New Hampshire, the tenth largest city in New England, and the largest city in northern New England, an area comprising the states of Maine, New Hampshire, and Vermont. It was first named by the merchant and inventor Samuel Blodget. Wikipedia
Area: 114 km2 calculated
Provo is the third-largest city in the U.S. state of Utah, located about 43 miles south of Salt Lake City along the Wasatch Front. Provo is the largest city and county seat of Utah County. It lies between the cities of Orem to the north and Springville to the south. Wikipedia