Question 961091


let the length of a rectangle be {{{L}}} and the width {{{W}}}

if the length is {{{three}}} time as much as its width, then we have

{{{L=3W}}}....eq.1


if requires {{{1200}}} of {{{6cm}}} square tiles ({{{36cm^2}}} is the area of each tile) for paving the area, then the area to cover is {{{1200*36cm^2=43200cm^2}}} and that area should be equal to area of the rectangle

{{{A=L*W}}}
{{{43200cm^2=3W*W}}}
{{{14400cm^2=W^2}}}
{{{sqrt(14400cm^2)=W}}}

{{{W=120cm}}}

{{{L=3W}}}....eq.1
{{{L=3*120cm}}}
{{{highlight(L=360cm)}}}