Question 940104

A rectangle: 
 {{{L=(2x+1)cm}}} ...convert to meters:{{{L=(2x+1)).01m}}}
{{{W=(2x-1)cm}}} ,....................{{{W=(2x-1).01m}}}

{{{P= 60m}}} 
find: the value of {{{x}}}

{{{P= 2(L+W)}}} 

{{{60m= 2((2x+1)).01m+(2x-1).01m)}}} 

{{{60m= 2(.02xm+.01m+.02xm-.01m)}}} 

{{{60cross(m)= 2(.02xcross(m)+.02xcross(m))}}} 

{{{60= 2(.02x+.02x)}}} 

{{{60= 2(.04x)}}} 

{{{60= .08x}}}

{{{60/.08=x}}}

{{{6000/8=x}}}

{{{highlight(x=750)}}}


{{{L=(2x+1).01m}}}

{{{L=(2*750+1).01m}}}

{{{L=(1501).01m}}}

{{{highlight(L=15.01m)}}}


{{{W=(2x-1).01m}}}

{{{W=(2*750-1).01m}}}

{{{W=(1500-1).01m}}}

{{{W=(1499).01m}}}

{{{highlight(W=14.99m)}}}

check the perimeter:

{{{P= 2(L+W)}}}

{{{60m= 2(15.01m+14.99m)}}}

{{{60m= 2(30m)}}}

{{{60m= 60m}}}