The original dimensions are 12 m and 20 m.
What is area of rectangle?
Area of rectangle is the region occupied by a rectangle within its four sides or boundaries.
The area of a rectangle depends on its sides. Basically, the formula for area is equal to the product of length and breadth of the rectangle.
Let x be the width of the rectangle.
Length of the rectangle = x+8
Area of the rectangle = x(x+8)
According to question, new width= x+2
New length = x+2+8 = x+10
New area = (x+2)(x+10)
Area increased = (x+2)(x+10) – x(x+8)
x^2+12x+20-x^2-8x=68
4x-20=68
4x=48
x=12
Hence, the width = 12m and length = 12+8 = 20 m
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