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anonymous

  • 5 years ago

find the length of each arc in terms of pi.

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  1. anonymous
    • 5 years ago
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    There should be more information.

  2. anonymous
    • 5 years ago
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    it is a circle and the radius is 11ft.

  3. anonymous
    • 5 years ago
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    So then the circumference would be 2π(11)ft or 22πft. But there should be an angle measure that corresponds to the arc.

  4. anonymous
    • 5 years ago
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    The arc length formula is 2πr*(x/360) where r is the radius and x is the degree measure of the arc.

  5. anonymous
    • 5 years ago
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    the degree is 150

  6. anonymous
    • 5 years ago
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    then you would have 2π(11)(150/360) = 9.167π ft

  7. anonymous
    • 5 years ago
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    thanks now i need your help with another question. find the area of a rhombus.

  8. anonymous
    • 5 years ago
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    so a rhombus is a parallelogram and the area of a parallelogram is base*height. So you should have a base and height. The height will be measured perpendicular to the base (create a 90 degree angle)

  9. anonymous
    • 5 years ago
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    a 90 degree angle is already created

  10. anonymous
    • 5 years ago
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    Good, then take the base and multiply by the height and that will give you the area.

  11. anonymous
    • 5 years ago
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    the answer says 21.65 cm^2 and i do not know how he came up with that.

  12. anonymous
    • 5 years ago
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    please reply back i need your help

  13. anonymous
    • 5 years ago
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    Are there any lengths given?

  14. anonymous
    • 5 years ago
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    they gave me 30 and 5cm

  15. anonymous
    • 5 years ago
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    are these the lengths of the base and the height? If so the answer should be 30*5 = 150 square cm

  16. anonymous
    • 5 years ago
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    i don't think it is because 150 is not the answer on my answer sheet. I think those numbers represents something else but i just do not know what

  17. anonymous
    • 5 years ago
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    Are they the lengths of the diagonals?

  18. anonymous
    • 5 years ago
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    there are two diagonals and one of the lenghts is 30 and the other number is on the outside of the rhombus.

  19. anonymous
    • 5 years ago
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    Without being able to see a diagram I'm afraid I can't be much help with this problem, sorry.

  20. anonymous
    • 5 years ago
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    thanks anyway for trying but im not done with you yet, um I need help with finding the area of a triangle. Round to the nearest tenth and the base of the triangle is 3 ft.

  21. anonymous
    • 5 years ago
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    ok, area of a triangle is given by the formula (1/2)bh where b is the base and h is the height. So for this problem there should be a height given.

  22. anonymous
    • 5 years ago
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    it's only 3ft and its an equilaterial triangle.

  23. anonymous
    • 5 years ago
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    ah, ok then. In an equilateral triangle you can draw the height in. The height line will cut the base in half and give you two triangles with sides 1.5 and 3 with the last side as 2.59807621 (using the pythagorean theorem a^2 + b^2 = c^2). So the height (2.59807621) times the base (3) divided by 2 is = 3.89711432

  24. anonymous
    • 5 years ago
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    so are both sides going to be 1.5

  25. anonymous
    • 5 years ago
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    how did you get 2.59807621

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