Question

the sides of two squares are 2 cm and 5 cm respectively what is there mean perimeter

Answer 1

perimeter of ist square = 4 × side
= 4 × 2
= 8
perimeter of 2nd square = 4 × 5
= 20
mean perimeter = 20+8/2
= 28/2
= 14
hence, 14 is the mean perimeter

Answer 2

Given: The sides of the two squares are 2cm and 5cm respectively.

To find: Mean perimeter of the two squares.

Solution: Let us assume that the square with side 2cm is square 1 and the other square with 5cm side is square 2.

The formula for the perimeter of a square= 4×(Side)

Perimeter for Square 1= 4×(2)             (Given that the side of square 1 is 2cm.)

Perimeter for Square 1= 8cm

Similarly

Perimeter for Square 2= 4×(5)           (Given that the side of square 2 is 5cm.)

Perimeter for Square 2= 20cm

The Formula for mean is:-

$Mean = \frac{Sum of Observations}{Total numbers of Observations}}$

Here the perimeters of squares 1 and 2 are 8cm and 20cm respectively(Observations) and the number of squares is 2 (Total number of observations).

Mean perimeter= $\frac{8+20}{2}$

Mean perimeter= 14cm

Hence the mean perimeter is 14cm.