Question

(2)
Find the diagonal of a square whose side is 10 em.​

Answer 1

Answer:

d =√2a

10/√2=a

a=5√2cm

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Answer 2

let ABCD is the sqaure

AB=BC=CD=AD..=10.......,..... .............side of the sqaure

AC is the diogonal

Now in triangle ABC angle B=90

by Pythagoras theorem

AC^,=AB^+BC^

=10^+10^

=100+100

=200

√100×2

=10√2........... taking square root

The diagonal of square is 10√2

I hope understand you...

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