How much longer is a 2 1/2 inch long piece of string than a 2/5 long piece of string

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Abaseball team drinks 10/4 gallons of water during a game. which mixed number represents the gallons of water consumed? a) 1 1/2 gallons b) 2 1/2 gallons c) 2 3/4 gallons d) 3 1/2 gallons

Use the irregular polygon below. show all work. a. find the perimeter. b. find the area. the angles of the irregular polygon is 2, 8, 8, and 4.