You need a length and a width. Then just multiply them to get the area in square units.
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10 x 5.5 = 55cm2
area of rectangle = l* b = 5 * 2=10 cm^ 2
area = length × width → length = area ÷ width = (9.314×10⁴) cm² ÷ (2.56×10²) cm = (9.314 ÷ 2.56) × (10⁴ ÷ 10²) cm = (9.314 ÷ 2.56) × 10⁴⁻² cm = 3.6375 × 10² cm
Length of rectangle: 7.9 cm Width of rectangle: 1.3 cm Area of rectangle: 7.9 times 1.3 = 10.27 square cm
rectangle with 10" length and 2x-4 width 60" area