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The area of the rectangle calculate using the algebraic model given is 84 m²
Given the algebraic representation for the area of a rectangle :
The Area of the rectangle when x = 3 can be calculated thus :
Substitute the value x = 3 into the equation :
x = 3
Area of rectangle = 6(3)² + 9(3) + 3
Area of rectangle = 54 + 27 + 3 = 84 m²
Therefore, the area of the rectangle is 84 m²
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