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crystal1

  • 3 years ago

The ratio of the heights of two similar rectangular prisms is 2:3. What is the ratio of their lateral areas? 8:27 2:5 4:9 1:0.33

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  1. jim_thompson5910
    • 3 years ago
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    If the ratio of two sides is x:y then the ratio of the surface areas is x^2:y^2

  2. crystal1
    • 3 years ago
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    thank you

  3. jim_thompson5910
    • 3 years ago
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    you're welcome

  4. crystal1
    • 3 years ago
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    what ^ means

  5. jim_thompson5910
    • 3 years ago
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    x^2 means \(\Large x^2\)

  6. jim_thompson5910
    • 3 years ago
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    the ^ tells the next number to go up and become an exponent

  7. crystal1
    • 3 years ago
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    oh ok lol

  8. jim_thompson5910
    • 3 years ago
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    sry I should have been more clear, let me know what you get for the answer

  9. crystal1
    • 3 years ago
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    so the correct answer is b

  10. jim_thompson5910
    • 3 years ago
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    no

  11. jim_thompson5910
    • 3 years ago
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    2^2 = ???

  12. crystal1
    • 3 years ago
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    oh c

  13. jim_thompson5910
    • 3 years ago
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    yes, 2^2 = 4 and 3^2 = 9 so if the sides are in ratio of 2:3, then the surface areas are in ratio of 4:9

  14. crystal1
    • 3 years ago
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    thanks for the medal and hellp

  15. jim_thompson5910
    • 3 years ago
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    you're welcome, you earned it by getting the correct answer and you hopefully see how to get it?

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