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frecy

  • 3 years ago

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

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  1. irkiz
    • 3 years ago
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    let the width by x cm length= (x+2)cm area = (x+2) times (x) = 80

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

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

  4. irkiz
    • 3 years ago
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    solve the equation and get x

  5. irkiz
    • 3 years ago
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    or you could do trial and error like fosterthepeople

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

  7. frecy
    • 3 years ago
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    how did you get 80?

  8. irkiz
    • 3 years ago
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    80 is the area

  9. irkiz
    • 3 years ago
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    length x breadth = area

  10. Fosterthepeople
    • 3 years ago
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    did you see how i did it up there?

  11. frecy
    • 3 years ago
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    Yup, I saw it.

  12. frecy
    • 3 years ago
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    Irkiz and Fosterthepeople THANKS GUYS! BIG HELP!

  13. Fosterthepeople
    • 3 years ago
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    no problem :P

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