Answer:
B
Step-by-step explanation:
The area is calculated by length×width. In this case you don't know the length or width precisely so you say 2w (squared) because it's the width×width and you subtract 19 because then you actually have width×length.
The expression that represents the area of the classroom floor is 2w - 19w
'A plane figure with four straight sides and four right angles, especially one with unequal adjacent sides, in contrast to a square.'
According to the given sum,
Width = w
Length = 2w - 19
Area of a rectangle = length × width
= w × (2w - 19)
= 2w ( squared ) - 19w
Hence, we can conclude that the expression that represents the area of the classroom floor is 2w (squared) - 19w.
Learn more about rectangles here: https://brainly.com/question/6402323
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