[" (v) "4000],[" Find the least number which must be added to each of the following numbers so as to get "],[" a perfect square.Also find the square root of the perfect square so obtained."],[[" (i) "525],[" (v) "6412]" (ii) "1750" (iv) "1825],[" Find the length of the side of a square whose area is "441m^(2)" ."]