The area of the figure is 289 square unit
What is Area of a Rectangle ?
The area of a rectangle can be calculated by multiplying the length and the width of the shape.
Given that
But the length and the width have two equal opposite sides. The shape is a square
20 - x = 3x + 8
20 - 8 = 3x + x
12 = 4x
x = 12/4
x = 3
L = 20 - 3 = 17
B = 3(3) + 8
B = 9 + 8
B = 17
A = 17 x 17
A = 289 square unit
Therefore, the area of the figure is 289 square unit
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