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ammy1234

  • 2 years ago

The lengths of the sides of a rectangle become 5 times greater than the original measurements. Which statement is true about the rectangle? Answer Its area becomes 5 times greater, and perimeter becomes 15 times greater. Its area becomes 15 times greater, and perimeter becomes 5 times greater. Its area becomes 25 times greater, and perimeter becomes 5 times greater. Its area becomes 5 times greater, and perimeter becomes 25 times greater.

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  1. Mertsj
    • 2 years ago
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    |dw:1329584966439:dw|

  2. Mertsj
    • 2 years ago
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    Which choice do you think it is?

  3. ammy1234
    • 2 years ago
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    Area 5 times greater and perimeter 15 times greater?

  4. Mertsj
    • 2 years ago
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    Do you see the area of the first rectangle is w times L ?

  5. ammy1234
    • 2 years ago
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    yeah

  6. Mertsj
    • 2 years ago
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    What is the area of the second rectangle?

  7. ammy1234
    • 2 years ago
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    25

  8. Mertsj
    • 2 years ago
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    25 wl is the area of the second rectangle. Would you agree?

  9. ammy1234
    • 2 years ago
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    sure

  10. Mertsj
    • 2 years ago
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    wl and 25 wl Which one is bigger?

  11. ammy1234
    • 2 years ago
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    25 wl..

  12. Mertsj
    • 2 years ago
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    How many times bigger is 25 wl than 1wl?

  13. ammy1234
    • 2 years ago
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    25 times bigger

  14. Mertsj
    • 2 years ago
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    There's your answer. Good job!!

  15. ammy1234
    • 2 years ago
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    Its area becomes 25 times greater, and perimeter becomes 5 times greater.

  16. Mertsj
    • 2 years ago
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    I don't think that works for the perimeter. We could try it and see.

  17. ammy1234
    • 2 years ago
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    well if its area is 25 times bigger it has to be that answer

  18. ammy1234
    • 2 years ago
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    because its the only one that states the area is 25 times bigger

  19. Mertsj
    • 2 years ago
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    |dw:1329585409440:dw|

  20. Mertsj
    • 2 years ago
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    So how many times bigger is the new perimeter?

  21. ammy1234
    • 2 years ago
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    5 times bigger yeah

  22. Mertsj
    • 2 years ago
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    Yes. You see, the thing is in the case of the area, we makes the length 5 times bigger and the width 5 times bigger and then we multiply the 5w and 5l which means we have to multiply 5 times 5 and l times w. So the area becomes 25 times bigger.

  23. Mertsj
    • 2 years ago
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    But in the case of the perimeter we only add them so we don't have to multiply the 5 by the 5.

  24. ammy1234
    • 2 years ago
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    thank you for your time

  25. Mertsj
    • 2 years ago
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    yw. Have a great weekend.

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