Question

Find the diagonal of square of side 10 cm 

10√³ cm 

10√² cm

10 cm

20 cm

​

Answer 1

Step-by-step explanation:

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As we know that

opposite side of square are equals

Ab²=10²+10²

AB²=200

AB=10root2

$ab = 10 \sqrt{2 \:} is \: the \: answer \: of \: this \: question$

Answer 2

Let square ABCD,

BD is the diagonal

Given,

side AB = BC = CD = AD = 10cm

BD² = BC² + CD²

BD² = 10² + 10²

BD = 10√2 cm

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