Question

write the mean of perimeter of two square having sides x and y units

Answer 1

Perimeter of Square = 4*side 
Perimeter of square having side x = 4x
Perimeter of square having side y = 4y
Mean = Sum of observations/ Total Number of Observations
Mean = 4x+4y/ 2
Mean  = 2(x+y) 

Answer 2

Perimeter of a square - 4a

In the question, value of sides of two squares are given as 'x' and 'y'.

Square 1

Side = 'x'

Perimeter of Square 1 = 4a

                                    = 4 × x

                                    = 4x

Square 2

Side = 'y'

Perimeter of Square 2 = 4a

                                     = 4 × y

                                     = 4y

Now, we find the mean of both Squares.

Mean = $\mathsf{\frac{No: \ Of \ Observations}{Total \ No: \ of \ Observations}}$

Mean = $\mathsf{\frac{4x \ + \ 4y}{2}}$

Mean = $\mathsf{\frac{4(x\ + \ y)}{2}}$

Mean = 2(x + y)

Hence, The mean of the perimeters of the given square's is 2(x + y)