The length of the row will be equal to 900''.
What is the length?
The measure of the size of any object or the distance between the two endpoints will be termed the length.
Given that:-
Number of the chairs = 50
Size of the chair = 18''
Now the size of the row will be:-
Size of the row = 50 x 18 = 900''
Therefore the length of the row will be equal to 900''.
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