The Leckworth family wants to put tile on their bathroom floor. Each tile is 1 ft square. Their bathroom is 4 feet by 6 feet. How many tiles will be needed? ft\large ^2

area = 24 square ft

so you will need 24 tiles, since there will be no loss of tiles at the edges

if the floor had been 4 by 9 feet, it would be incorrect to say we need
36 square ft.
Why ?