A) 12cm
B) 15cm
C) 25cm
D) None of these
Correct Answer: C
Solution :
In\[\angle A=\angle B=\angle C=\angle D={{90}^{o}}\], we have\[x<y\] \[x>y\] \[\angle 1+\angle 2+\angle 3+\angle 4=\angle 5+\angle 6+\angle 7+\angle 8\] \[\angle 1+\angle 2+\angle 3+\angle 4<\angle 5+\angle 6+\angle 7+\angle 8\]\[\angle 1+\angle 2+\angle 3+\angle 4>\angle 5+\angle 6+\angle 7+\angle 8\]\[AB=2x+5,\] In \[CD=y+1,\] we have \[AD=y+5\] \[BC=3x-4\] \[\angle BOC={{90}^{o}}\] \[\angle AOB\] \[{{10}^{o}}\] \[{{40}^{o}}\] \[{{50}^{o}}\] \[{{25}^{o}}\] \[{{25}^{o}}\]
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