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UmmmHELP

  • 3 years ago

A circle has its center at the center of a square with 3-inch sides. Find the area of the square not covered by the circle. Round the answer to the nearest tenth.

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  1. UmmmHELP
    • 3 years ago
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  2. FibonacciChick666
    • 3 years ago
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    the diameter of the circle is 3in. Why? the diameter is parallel to a side. So we will calculate the area of the circle and subtract that value from the area of the square. so area of the square=l*w=3*3=9 area of the circle=\[\pi \times r^{2}\]=\[\pi\times 3/2^{2}\]. THIS YIELDS: \[9- 9/4 \times \pi\] then put into a calculator and get A=\[6.75 \pi\]

  3. UmmmHELP
    • 3 years ago
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    thanks!

  4. FibonacciChick666
    • 3 years ago
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    no problem

  5. UmmmHELP
    • 3 years ago
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    Do you think you could check a few others? Im not sure if I did them right

  6. FibonacciChick666
    • 3 years ago
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    sure

  7. UmmmHELP
    • 3 years ago
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    Find the circumference of the circle. Use

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  8. UmmmHELP
    • 3 years ago
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    I will show you what I did

  9. FibonacciChick666
    • 3 years ago
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    ok

  10. UmmmHELP
    • 3 years ago
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    |dw:1360805300876:dw|

  11. UmmmHELP
    • 3 years ago
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    Sorry its sloppy but does that look right so far?

  12. FibonacciChick666
    • 3 years ago
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    ok. so you have the equation for Circumference right, but you solved for the radius. Hint: What relationship exists between the diameter and the radius?

  13. UmmmHELP
    • 3 years ago
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    Well the are uses radius so thats why I solved for radius first

  14. UmmmHELP
    • 3 years ago
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    *area

  15. FibonacciChick666
    • 3 years ago
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    \[[C=2\times \pi \times r]\]

  16. FibonacciChick666
    • 3 years ago
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    ok so let's restart

  17. FibonacciChick666
    • 3 years ago
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    What information are you given?

  18. UmmmHELP
    • 3 years ago
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    just the picture and to use 3.14

  19. FibonacciChick666
    • 3 years ago
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    ok. so what information did the picture contain?

  20. UmmmHELP
    • 3 years ago
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    The diameter

  21. FibonacciChick666
    • 3 years ago
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    ok good. now how could you write the radius in terms of the diameter?

  22. UmmmHELP
    • 3 years ago
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    well its half the diameter

  23. FibonacciChick666
    • 3 years ago
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    good

  24. FibonacciChick666
    • 3 years ago
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    so do we have the information we need to answer the question?

  25. UmmmHELP
    • 3 years ago
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    Actually I think I figured it out I got what I was doing wrong now

  26. FibonacciChick666
    • 3 years ago
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    ok just let me know your final answer and I will tell you if it is correct

  27. UmmmHELP
    • 3 years ago
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    I got 5.966

  28. FibonacciChick666
    • 3 years ago
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    Although that is a correct answer it is usually better form to leave the answer in terms of pi because it is more accurate

  29. FibonacciChick666
    • 3 years ago
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    dependent upon your teacher though

  30. FibonacciChick666
    • 3 years ago
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    i actually need to go good luck though

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