Question

4) The sides of two squares are 2cm and 5 cm respectively what is their mean perimeter?
a) 7 cm
b) 14 cm
c)8 cm
d) 11 cm​

Answer 1

Answer:

b

Step-by-step explanation:

P1=2×4=8

P2=5×4=20

Mean of P= P1+P2/2

P=20+8/2=14

Answer 2

Answer:

Option b

Mean perimeter of two squares = 14 cm

Step-by-step explanation:

Given:-

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

To find:-

what is their mean perimeter?

Solution:-

Side of the first square =2cm

Perimeter of the first square =4×length of the side

=>4×2 cm

=>P1=8cm

Perimeter of the first square = 8cm----(1)

Side of the second square =5cm

Perimeter of the second square =4×lengtg of the side

=>4×5 cm

=>P2=20 cm

Perimeter of the second square=20 cm-----(2)

Mean perimeter of the two squares

=>(P1+P2)/2

=>(8+20)/2

=>28/2

=>14 cm

Solution:-

Mean perimeter of the two squares =14 cm

Used formulae:-

• Perimeter of a square =4× Length of the side units
• Mean of A and B=(A+B)/2