Question

108. If the diagonal of a square is 8 cm then the side
of the square is:
[AMU:1999-2000]
(a) 2 cm
(b) 1.414 cm
(c) 2.8 cm (d) 5.65 cm​

Answer 1

Answer:

diagonal of square ✓2a

where a is the side of square

√2a=8

a=8÷√2=5.65

Answer 2

let sides of square be equal to a and diagonal

8 cm

by applying pythagoras theoram

ac^2=ab^2+bc^2

8^2=a^2+a^2

64=2a^2

64/2=a^2

32= a^2

4√2 =a

5.65=a

side=5.65