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frecy Group Title

The length of a rectangle is 2 cm greater than the width. The area is 80 cm. Find the length and width.

  • 2 years ago
  • 2 years ago

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  1. irkiz Group Title
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    let the width by x cm length= (x+2)cm area = (x+2) times (x) = 80

    • 2 years ago
  2. Fosterthepeople Group Title
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    fLength 10cm Width 8 cm Area = Length x Width 80cm(cubed) = 10cm x 8cm

    • 2 years ago
  3. irkiz Group Title
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    \[(x+2) \times x = 80\] \[x ^{2} + 2x-80 = 0\]

    • 2 years ago
  4. irkiz Group Title
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    solve the equation and get x

    • 2 years ago
  5. irkiz Group Title
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    or you could do trial and error like fosterthepeople

    • 2 years ago
  6. irkiz Group Title
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    but that would be hard for a larger area in another similar question

    • 2 years ago
  7. frecy Group Title
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    how did you get 80?

    • 2 years ago
  8. irkiz Group Title
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    80 is the area

    • 2 years ago
  9. irkiz Group Title
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    length x breadth = area

    • 2 years ago
  10. Fosterthepeople Group Title
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    did you see how i did it up there?

    • 2 years ago
  11. frecy Group Title
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    Yup, I saw it.

    • 2 years ago
  12. frecy Group Title
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    Irkiz and Fosterthepeople THANKS GUYS! BIG HELP!

    • 2 years ago
  13. Fosterthepeople Group Title
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    no problem :P

    • 2 years ago
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