By rationalising the denominator of each of the following; find, in each case, the value correct to two significant figures : (i) (ii) (iii)

(i) Since, the denominator = , its rationalizing factor = . Hence, = 0.63. (ii) Since, the denominator = , its rationalizing factor = . Hence, = 0.27. (iii) Since, the denominator = , its rationalizing factor = . Hence, = 5.12.