The answer is C
The reason being these two sets of angles are opposite angles (also known as vertical angles) and opposite angles are always congruent.
Say, width = x
length = 2x +5
(x+2x+5)*2= 6x+10
6x+10=106
x= 96/6=16
Width =16 Mt
Length =37 mt
the answer is totally numbers
B. 
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<u>Step</u>-<u>by</u>-<u>step</u> <u>explanation</u>:
Taking 
as common from first two terms and 1 from last two terms, we have
Taking the factor 
as common,
