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richardlong369

  • 2 years ago

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

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  1. richardlong369
    • 2 years ago
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    Here is the problem

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

  3. richardlong369
    • 2 years ago
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    yes

  4. Mertsj
    • 2 years ago
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    |dw:1339274429124:dw|

  5. Mertsj
    • 2 years ago
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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

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

  7. Mertsj
    • 2 years ago
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    The area of the shaded part is the difference of the two.

  8. richardlong369
    • 2 years ago
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    so A= 1017.88

  9. Mertsj
    • 2 years ago
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    What is the area of the pentagon?

  10. richardlong369
    • 2 years ago
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    1177.2

  11. Mertsj
    • 2 years ago
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    What is the area of the circle?

  12. richardlong369
    • 2 years ago
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    1017.8

  13. Mertsj
    • 2 years ago
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    How would you find the area of the shaded part?

  14. richardlong369
    • 2 years ago
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    1017.88 minus 1177.2

  15. Mertsj
    • 2 years ago
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    sutract the little one from the big one.

  16. richardlong369
    • 2 years ago
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    so 1177.7 minus 1017.88

  17. Mertsj
    • 2 years ago
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    yep

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