Cleveland is 5.4 times larger than Lowell, Massachusetts.
Area: 203 km2 calculated
Cleveland is a city in the U.S. state of Ohio and is the county seat of Cuyahoga County, the most populous county in the state. The city is located in northeastern Ohio on the southern shore of Lake Erie, approximately 60 miles west of the Pennsylvania border. Wikipedia
Area: 38 km2 calculated
Lowell is a city in Middlesex County, Massachusetts, in the United States. With an estimated population of 108,522, it is the fourth-largest city in Massachuetts, after Boston, Worcester, and Springfield, and the second-largest in what the U.S. Census Bureau defines as Boston's metropolitan area. Wikipedia