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Question
Find the length of diagonal of the square whose side is 8 cm.
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Solution
Length of the Diagonal `sqrt2 xx "side"`
`⇒ sqrt 2xx8`
⇒ `8sqrt2`cm
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For finding AB and BC with the help of information given in the figure, complete following activity.
AB = BC .......... 
∴ ∠BAC =
∴ AB = BC = × AC
= × `sqrt8`
= × `2sqrt2`
=
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