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anncandy

  • 2 years ago

The perimeter of a rectangle is 10 cm, and its dimensions are tripled. What is the perimeter of the larger rectangle? 12 cm 20 cm 30 cm 10 cm

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  1. mathteacher1729
    • 2 years ago
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    Do you know what the phrase "Dimensions are tripled" means? (like, can you draw a before and after picture)

  2. lgbasallote
    • 2 years ago
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    sorry for that..continue the teaching @mathteacher1729 :)

  3. anncandy
    • 2 years ago
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    It means that its tripled. I don't think i can draw it

  4. mathteacher1729
    • 2 years ago
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    What, exactly, is tripled? Not trying to be a poo-poo head, depending on how you interpret this problem, there are different answers.

  5. anncandy
    • 2 years ago
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    the perimeter of the rectangle

  6. mathteacher1729
    • 2 years ago
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    The dimensions are not the perimeter. The dimensions mean "the length and the width". So if the length is say, 4 and the width is 1, then the perimeter is 4 + 4 + 1 + 1 |dw:1341673430917:dw|

  7. mathteacher1729
    • 2 years ago
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    Now if you triple the dimensions, that means you triple the length and triple the width... 12 + 12 + 3 + 3 |dw:1341673481562:dw|

  8. mathteacher1729
    • 2 years ago
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    |dw:1341673518998:dw|

  9. anncandy
    • 2 years ago
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    Would it be 30?

  10. mathteacher1729
    • 2 years ago
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    Why do you say 30?

  11. anncandy
    • 2 years ago
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    12+12+3+3=30

  12. mathteacher1729
    • 2 years ago
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    You got it. :)

  13. anncandy
    • 2 years ago
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    Great! Thanks so much

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