Question

The area of a rectangle is equal to its length times its width. If the area of a rectangle is 4x + 20 square feet, which option could be the length and width of that rectangle?
A-Length = 4 ft
Width = (x + 5) ft
B-Length = 2 ft
Width = (x + 5) ft
C-Length = 4 ft
Width = (x + 20) ft
D-Length = 2 ft
Width = (2x + 20) ft

Answer 1

Answer:

Area of rectangle = length × breadth = 4x + 20

• (A) 4(x + 5) = 4x + 20 = 4x + 20

• (B) 2(x + 5) = 2x + 10 ≠ 4x + 20

• (C) 4(x + 20) = 4x+80 ≠ 4x + 20

• (D) 2(2x + 20) = 4x+40 ≠ 4x + 20

As (A) is equal to the original area...

Option A could be the length and width of that rectangle.

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