Question

Q6. The side of a square is 10cm. Find the length of the diagonal.​

Answer 1

Answer:

Step-by-step explanation: Every side and angle of square are equal

We know that sum of angles of any Quadrilateral is 360

Suppose, angle = x

Therefore, x+x+x+x=360

4x=360

x=360/4

x=90

Now, we can use "Pythagoras Theorem"

A²+B²=C², where A=B=side of square and C=diagonal

Putting value of A and B

C² = 10²+10²

=200

=2(100)

Now, take square root both side

C = 10√2

© Hence, length of diagonal is 10√2 unit