Question

The perimeter of a square is 28 cm. Find its area and the length of its diagonal.​

Answer 1

Answer:

let the edge of the square=a

Step-by-step explanation:

ATQ

perimeter of square=28

=> 4*a=28

=>a=7

Now

area of square=a*a

=7*7

=49

And

length of diagonal=√2*a

=7√2