anonymous
  • anonymous
find the length of each arc in terms of pi.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
There should be more information.
anonymous
  • anonymous
it is a circle and the radius is 11ft.
anonymous
  • anonymous
So then the circumference would be 2π(11)ft or 22πft. But there should be an angle measure that corresponds to the arc.

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More answers

anonymous
  • anonymous
The arc length formula is 2πr*(x/360) where r is the radius and x is the degree measure of the arc.
anonymous
  • anonymous
the degree is 150
anonymous
  • anonymous
then you would have 2π(11)(150/360) = 9.167π ft
anonymous
  • anonymous
thanks now i need your help with another question. find the area of a rhombus.
anonymous
  • anonymous
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)
anonymous
  • anonymous
a 90 degree angle is already created
anonymous
  • anonymous
Good, then take the base and multiply by the height and that will give you the area.
anonymous
  • anonymous
the answer says 21.65 cm^2 and i do not know how he came up with that.
anonymous
  • anonymous
please reply back i need your help
anonymous
  • anonymous
Are there any lengths given?
anonymous
  • anonymous
they gave me 30 and 5cm
anonymous
  • anonymous
are these the lengths of the base and the height? If so the answer should be 30*5 = 150 square cm
anonymous
  • anonymous
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
anonymous
  • anonymous
Are they the lengths of the diagonals?
anonymous
  • anonymous
there are two diagonals and one of the lenghts is 30 and the other number is on the outside of the rhombus.
anonymous
  • anonymous
Without being able to see a diagram I'm afraid I can't be much help with this problem, sorry.
anonymous
  • anonymous
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.
anonymous
  • anonymous
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.
anonymous
  • anonymous
it's only 3ft and its an equilaterial triangle.
anonymous
  • anonymous
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
anonymous
  • anonymous
so are both sides going to be 1.5
anonymous
  • anonymous
how did you get 2.59807621

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