Question 178325
</pre><font size=4><b>
Remember: {{{P[R]=2(L+W)}}}, working eqn
Given: {{{P=112meters}}}
{{{L=4m+W}}}----> subst. working eqn
{{{112=2(4+W+W)}}}---->{{{112/2=(cross(2)(4+2W))/cross(2)}}}
{{{56=4+2W}}}----->{{{56-4=2W}}}
{{{cross(2)W/cross(2)=cross(52)26/cross(2)}}}
{{{highlight(W=26meters)}}}---> EXACTLY 26 meters, ANSWER
{{{L=4+26=30meters}}}
Check:
{{{112=2(30+26)}}}
{{{112=2(56)}}}
{{{112=112}}}
thank you,
Jojo</pre>