Answer:- We know that perimeter of aquadrilateral is the sum of its all four sides,so parallelogram is also a quadrilateral. Therefore, its perimeter will also be the sum of its all four sides,but opposite sides of a parallelogram are equal,so perimeter of a parallelogram will be,
= 2(b+l) where, b= length of the base side of the parallelogram l = length of the adjacent side of the base side.
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