Get the area of the dog houses.
Since it is stated that the dog houses will be rectangular, you use the formula:
or simply multiply the dimensions.
`A_s` = area of the smaller house
`A_s = 2*1 = 2 sq. ft`
`A_l` = area of the larger house
`A_l = 4*2 = 8 sq. ft`
To solve how many greater is the larger house, subtract the area of the smaller from the area of the larger houes.
`A_l - A_s = 8 - 2 = 6`
Therefore, the larger house is greater by 6 sq. ft.