Question 573513
The question is:
Which is the shorter distance?
AR or BR ?
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AR=
{{{ sqrt( ( 5 - 1 )^2 + ( 3 - 1 )^2 ) }}}
{{{ sqrt( 4^2 + 2^2 ) }}}
{{{ sqrt( 16 + 4 ) }}}
{{{ sqrt( 20 ) }}}
{{{ 2*sqrt(5) }}}
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BR=
{{{ sqrt( ( 1 - 1 )^2 + ( 5 - 1 )^2 ) }}}
{{{ sqrt( 0^2 + 4^2 ) }}}
{{{ sqrt( 0 + 16 ) }}}
{{{ 4 }}}
B is closer to R 
The difference is
{{{ 2*2.2361 - 4 }}}
{{{ 4.4721 - 4 }}}
{{{ .4721 }}}