anonymous
  • anonymous
what is the perimeter and lenght of a rectangle if area=515.97 and width=18.9 ....???
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
2widths and 2lenghts give perimeter. and length times width is area you have to unkowns in two equations solve for one then substitute
anonymous
  • anonymous
\[2l+2w=perimeter\]
anonymous
  • anonymous
\[lw=area(515.97)\]

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anonymous
  • anonymous
substitute 18.9 for w and solve for l in the second equation
anonymous
  • anonymous
how do i get the lenght??
anonymous
  • anonymous
what do you get
anonymous
  • anonymous
in the second equation lenght times width equalls area subtitute 18.9 then solve for l by dividing both sides of the equation by w
anonymous
  • anonymous
is it right?? i get 27.3 for the leght... can you please check it if it is right... :d
anonymous
  • anonymous
yes
anonymous
  • anonymous
now substitute l and w in the first equation to get the perimeter.
anonymous
  • anonymous
so what is the p??
anonymous
  • anonymous
thanks!
anonymous
  • anonymous
2l+2w=perimeter

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