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richardlong369

Geometry question Need Some Help Please ---------> Click on Attachment

  • one year ago
  • one year ago

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  1. richardlong369
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    Here is the problem

    • one year ago
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  2. Mertsj
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    Is it correct to assume that the pentagon is tangent to the circle at 5 points?

    • one year ago
  3. richardlong369
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    yes

    • one year ago
  4. Mertsj
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    |dw:1339274429124:dw|

    • one year ago
  5. Mertsj
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    So a side of the pentagon is 26.16 and the area of the pentagon is 1/2(18)(130.8)=1177.2

    • one year ago
  6. Mertsj
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    The area of the circle is pi(18)^2=1017.88

    • one year ago
  7. Mertsj
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    The area of the shaded part is the difference of the two.

    • one year ago
  8. richardlong369
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    so A= 1017.88

    • one year ago
  9. Mertsj
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    What is the area of the pentagon?

    • one year ago
  10. richardlong369
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    1177.2

    • one year ago
  11. Mertsj
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    What is the area of the circle?

    • one year ago
  12. richardlong369
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    1017.8

    • one year ago
  13. Mertsj
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    How would you find the area of the shaded part?

    • one year ago
  14. richardlong369
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    1017.88 minus 1177.2

    • one year ago
  15. Mertsj
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    sutract the little one from the big one.

    • one year ago
  16. richardlong369
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    so 1177.7 minus 1017.88

    • one year ago
  17. Mertsj
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    yep

    • one year ago
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