Question

The length of one side of a square is more than the other by 4.2cm.which of the following can be it's perimeter?
a)16.4
B)16
C)17.32
D)16.2

Answer 1

Step-by-step explanation:

Hey the side of square are always same .

This answer for a rectangle

Let, the length be x and breath be y.

x= y+4.2

Perimeter of a rectangle=2(l+b)

                                       = 2(y+4.2+y)

                                       = 4y + 8.4

Answer 2

Heya mate here is your answer.....
The sides of a square are always same.
In the given rectangle ,
$let \: \: the \: \: sides \: \: be \: \: \\ x \: \: and \: \: x + 4.2 \\ 2(x + x + 4.2) \\ = 2(2x + 4.2) \\ = 4x + 8.4$
Then to check which option is correct , 8.4 has to be subtracted and then divided by 4.
a) 16.4-8.4=8
4x=8
X=2
b)16-8.4=7.6
X=1.9
c)17.32-8.4=9.28
x=2.32
d) 16.2-8.4=7.8
X=2.95
Therefore option (a) is the answer.
Hope it helps you mate....
Regards !!!