Question 685877
I guess you have all b's small letters here:


{{{A= b(b+2bL)}}} 

{{{A= b*b(1+2L)}}}

{{{A= b^2(1+2L)}}}

{{{A/(1+2L )= b^2}}}..........when {{{A = 1024}}} and {{{L = 60}}} 

{{{1024/(1+2*60 )= b^2}}}

{{{1024/121= b^2}}}

{{{8.46= b^2}}}

{{{b=sqrt(8.46)}}}

{{{b=2.91}}}