Question 989471

a diagonal divides a rectangle in two right angle triangles; so, use Pythagorean theorem

 if the length is {{{L=12}}} and whose diagonal is {{{d=13}}}, than the width {{{W}}} will be

{{{W^2=d^2-L^2}}}

{{{W^2=13^2-12^2}}}

{{{W^2=169-144}}}

{{{W^2=25}}}

{{{W=sqrt(25)}}}

{{{highlight(W=5)}}}


so, the length is {{{L=12}}} and the width is {{{W=5}}}

the area will be: {{{A=L*W}}}

{{{A=12*5}}}

{{{A=60}}}