Question

Q2: IF SIDES OF PARALLELOGRAM ARE 3Y AND 4Y AND ITS PERIMETER IS 140 CMS THEN 'Y' IS _______
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Answer 1

Answer:

Perimeter of a parallelogram = sum of its sides

as opposite sides are equal in a parallelogram , perimeter would be equal to 2(side1+ side2)

= 2(3Y + 4Y) = 140

= 7Y = 140 × 2

= Y = 280/7 = 40cm