"If the length of the diagonal of a square is 20 cm, then its perimeter must be`10sqrt
Channel: Doubtnut
Date: 2020-04-05

"If the
 length of the diagonal of a square is 20 cm, then its perimeter must be
`10sqrt(2)c m`
(b) `40 c m`
(c) `40sqrt(2)c m`
(d) `200\ c m`"