anonymous
  • anonymous
The length of a rectangle is 2 cm greater than the width. The area is 80 cm. Find the length and width.
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
let the width by x cm length= (x+2)cm area = (x+2) times (x) = 80
anonymous
  • anonymous
fLength 10cm Width 8 cm Area = Length x Width 80cm(cubed) = 10cm x 8cm
anonymous
  • anonymous
\[(x+2) \times x = 80\] \[x ^{2} + 2x-80 = 0\]

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anonymous
  • anonymous
solve the equation and get x
anonymous
  • anonymous
or you could do trial and error like fosterthepeople
anonymous
  • anonymous
but that would be hard for a larger area in another similar question
anonymous
  • anonymous
how did you get 80?
anonymous
  • anonymous
80 is the area
anonymous
  • anonymous
length x breadth = area
anonymous
  • anonymous
did you see how i did it up there?
anonymous
  • anonymous
Yup, I saw it.
anonymous
  • anonymous
Irkiz and Fosterthepeople THANKS GUYS! BIG HELP!
anonymous
  • anonymous
no problem :P

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