the wilsons back yard is rectangular plot that has a length of 100 feet and a width of 80 feet. the family planted a garden with a length and width of 60 feet. the family planted the lawn in the remaining area of the back yard. what is the area in square feet

the area in square feet is 4400. (because to find the area of the rectangle you multiply the 2 side lengths, 100 and 80 which gives you 8000, then you find the area of the square, multiply 60 by 60 which is 3600, then you subtract the total area of the backyard by the area taken up by the garden, 8000-3600, which gives you your total of 4400.)