Question

2)Find the side and perimeter of a square whose diagonal is 10 cm.
Sol.:​

Answer 1

Answer:

let sides be x.

Now, diagonal divides the square into 2 triangles.

In triangle ABC, angle abc is 90 degree( by definition of a square).

By pythagoras theorem,

10^2= x^2+x^2

=100=2x^2

=50=x^2

=x=root50 cm

Now perimieter is 4x.

4root50 cm

sorry couldnt attach fig... Pls make a square and name it abcd.