Question

The side of square is 8cm, find the length of its diagonal

Answer 1

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Answer 2

Step-by-step explanation:

side of square= 8cm

sides of square are perpendicular to each other.

let ABCD be that square and AC is it's diagonal.

therefore, AB=BC=DC=AD= 8 cm

In ∆ ADC,

by phythagorus theorem

=AC^2= AD^2 + DC^2

=8^2 + 8^2

= 64+64

= 128

AC^2= 128

therefore,

AC= 8√2

therefore, length of the diagonal is 8√2 cm.

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