The perimeter is the sum of the length of all the 4 sides. The perimeter of a parallelogram is the total distance outside the geometrical shape. The opposite sides of a parallelogram are equal and so the perimeter becomes twice the sum of two parallel sides say a and b.
The perimeter of a Parallelogram Formula is given as,
Perimeter of a Parallelogram Formula = 2 (a + b) units
Find the perimeter of a parallelogram whose base is 8 cm and another side is 12 cm.
b = 8 cm
a = 12 cm
Perimeter of a Parallelogram = 2(a + b)
= 2(12 + 8)
= 2 x 20 cm
= 40 cm