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Mathrocks4me

The pizza has a diameter of 12 inches. What is the closest to the area of the pizza? a. 432 square inches b. 168 square inches c. 108 square inches d. 72 square inches

  • one year ago
  • one year ago

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  1. Wired
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    Area of a circle = pi*r^2, 2r = diameter

    • one year ago
  2. danny_dumond
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    2*3.14*6

    • one year ago
  3. danny_dumond
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    ohhh yup ur right

    • one year ago
  4. danny_dumond
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    2pi r

    • one year ago
  5. Wired
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    @danny_dumond You posted the formula for the circumference, not the area.

    • one year ago
  6. Mathrocks4me
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    Cool. I keep forgetting to multiply by 2....thanks guys. C=pi*d Area of a circle=A=pi*r^2

    • one year ago
  7. danny_dumond
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    yes i just realized sorry

    • one year ago
  8. Wired
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    2r = diameter r = (diameter/2) \[\pi*(\frac{diameter}{2})^{2} = \]

    • one year ago
  9. Mathrocks4me
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    Did you get 113.04?

    • one year ago
  10. Wired
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    Yep. If you use 3 as pi you'll get 108.

    • one year ago
  11. Mathrocks4me
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    Thanks!!!

    • one year ago
  12. Wired
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    No problemo

    • one year ago
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