Question

I need answers ....plz​

Answer 1

I will solve one part from each question so to teach you and you may practice the rest.

$(11.6)^{2}$                    {Using $(a+b)^{2} = a^{2} +b^{2} + 2ab$}

⇒ $[11]^{2} + [0.6]^{2} +2[11][0.6]$

 =   121 + 3.6 + 13.2

  =   137.8