288 Square units or 288 units squared
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The rectangle can be thought of as two adjacent 12 x 12 squares. Each square has an area of 144 sq. ft., making the entire rectangle 288 sq. ft. thereby creating a needless extra step, since the area of the rectangle is 12 x 24 = 288 sq. ft.
Area = Length x width. 10 x 12 = 120
Any number less than 576 cm2. A square, with sides of 24 cm will have a perimeter of 96 cm and an area of 576 cm2. Suppose the sides of the rectangle are 24+x cm and 24-x cm, where 0<x<24. Then the perimeter will be 96 cm while the area will be (24+x)*(24-x) = 576 - x2 cm2 The area can have any value in the range (0, 576) depending on the value of x.
Area of a rectangle = L W = (24 x 3) = 72 square inches.
This rectangle has an area of 12' x 10' = 120 square feet.