Question

2) Find the side and perimeter of a square having diagonal 20 cm.​

Answer 1

Let a be the side of the square.

Then according to the problem we have,

a

2

=20

or, a=10

2

.

Now perimeter of the square will be 4a=40

2

cm.

Answer 2

Answer:

Square

Solve for side

a≈14.14

d Diagonal

20

Using the formula

d=2a

Solving fora

a=2d

2=2·20

2≈14.14214