Answer:
The value of n is n = 2.56 cm
Option D is correct option.
Explanation:
Perimeter of hexagon = 14.7 cm
Five sides have length = n cm
One side has length = 1.9 cm
We need to find value of n
The formula used to find Perimeter of hexagon is :

We can write:

Because 5 sides have length = n so, 5n and one side has length = 1.9
Now, solving to find n

So, The value of n is n = 2.56 cm
Option D is correct option.