The correct option is A 22 cm
Given, perimeter of the figure = 64 cm
Sum of the given sides = 6 cm + 2 cm + 4 cm + 18 cm + 4 cm + 2 cm + 6 cm = 42 cm
Now, perimeter of the figure = Sum of length of all the sides
⇒ Perimeter of the figure = 6 cm + 2 cm + 4 cm + 18 cm + 4 cm + 2 cm + 6 cm + x
⇒ 64 cm = 42 cm + x
⇒ x = 64 cm - 42 cm = 22 cm
∴ Length of the remaining side (x) = 22 cm