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gabbyalicorn

  • one year ago

A circular plate has a diameter of 6 inches. What is the exact area of the plate? A. 36π square inches B. 6π square inches C. 9π square inches D. 3π square inches

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  1. gabbyalicorn
    • one year ago
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    I think A

  2. Owlcoffee
    • one year ago
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    Well, you can calculate the area of a circle with the following formula: \[A _{\circ}= \pi r^2\] So, therefore: \[A_ \circ = \pi (6)^2\]

  3. gabbyalicorn
    • one year ago
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    I got 113.04

  4. Michele_Laino
    • one year ago
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    the requested area is given by this formula: \[A = \pi \times \frac{{{D^2}}}{4} = \pi \times \frac{{36}}{4} = ...inche{s^2}\]

  5. Owlcoffee
    • one year ago
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    oooh, it's the diameter, read wrong :(

  6. gabbyalicorn
    • one year ago
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    wait so 3.14 x 36 div 4 ?

  7. Michele_Laino
    • one year ago
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    you don't have to multiply by 3.14, you have to write pi only

  8. gabbyalicorn
    • one year ago
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    but pi = 3.14

  9. Michele_Laino
    • one year ago
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    yes! nevertheless you have to write pi instead of 3.14

  10. gabbyalicorn
    • one year ago
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    okay.

  11. Michele_Laino
    • one year ago
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    so, what dou you get?

  12. gabbyalicorn
    • one year ago
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    28.26

  13. Michele_Laino
    • one year ago
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    I got: \[A = 9 \times \pi {\kern 1pt} inche{s^2}\]

  14. gabbyalicorn
    • one year ago
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    oh. well it still equals the same thing.

  15. gabbyalicorn
    • one year ago
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    brb

  16. Michele_Laino
    • one year ago
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    you have to divide 36 by 4 only

  17. gabbyalicorn
    • one year ago
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    which is 9

  18. gabbyalicorn
    • one year ago
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    Oh! C :D lol Yay! Thank you! ^u^

  19. Michele_Laino
    • one year ago
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    :)

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