Question

What is the Perimeter of an equilateral triangle of side $\sqrt{4a^2+1+4a}$ units.

Answer 1

Length $=\sqrt{4a^2+4a+1}=\sqrt{(2a+1{)}^2}=2a+1$

Length of an Equilateral Triangle $=3\ast$(Length of side)$=3\ast (2a+1)=6a+3$