Question

ii)The area of a square is 49 cm^ 2.So,its diagonal is a)72 cm b)52 cm c)32 cm d)42 cm please answer its fast its urgent

Answer 1

Step-by-step explanation:

area of square=A2 so A2=49 a=7. side of square is 7 cm so the length of diagonal is 32

Answer 2

$Let \: side \:of \:a \:square = a \: cm$

$Area \:of \: the \: square = 49 \:cm^{2}$

$\blue{ ( given ) }$

$\implies a^{2} = (7 \:cm )^{2}$

$\implies a = 7 \: cm \: --(1)$

$Now , Diagonal (d) = \sqrt{2} a$

$= 7\sqrt{2} \:cm$

Therefore.,

$\red{ Diagonal\: of \: the \: square }\green {= 7\sqrt{2} \:cm }$

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