Question

What is the length of a diagonal of a square of side 10 cm?

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Answer 1

Answer:

The side of square is 10 cm

In right angled △ABD

AB

2

+AD

2

=BD

2

[according to Pythagoras theorem]

(10)

2

+(10)

2

=BD

2

$

100+100=BD

2

BD

2

=200

BD=10

2

cm

∴ Diagonal of square =10

2

cm.

solution