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Given: SR=12cm, QM=7.6cm, PS=8cm.
Area of parallelogram=base×height
=12×7.6=91.2cm2.
Area of parallelogram=base×height
⇒91.2=8×QN
⇒QN=891.2=11.4cm.
 
        
             
        
        
        
Answer:
x=71
Step-by-step explanation:
(Base angle of an isosceles triangle)