Question

the perimeter of a square is 16 cm find length of its diagonal

Answer 1

Perimeter of a square is p=4sp=4s, where s is the length of the side. Let’s plug in the perimeter and see where that takes us.

16=4s16=4s

s=4s=4

So, we know that the square has 4 sides of length 4cm. The formula for area of a square is a=s2a=s2, so let’s plug in the side length to get the area!

a=42a=42

a=16a=16

Thus, the area is 16cm216cm2.

Answer 2

p=16
s=4
So diagonal = Sq root of side square × 2
=Sq root of 4×2
=2 root 2
Hope it helps