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There should be more information.
it is a circle and the radius is 11ft.
So then the circumference would be 2π(11)ft or 22πft. But there should be an angle measure that corresponds to the arc.
The arc length formula is 2πr*(x/360) where r is the radius and x is the degree measure of the arc.
the degree is 150
then you would have 2π(11)(150/360) = 9.167π ft
thanks now i need your help with another question. find the area of a rhombus.
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)
a 90 degree angle is already created
Good, then take the base and multiply by the height and that will give you the area.
the answer says 21.65 cm^2 and i do not know how he came up with that.
please reply back i need your help
Are there any lengths given?
they gave me 30 and 5cm
are these the lengths of the base and the height? If so the answer should be 30*5 = 150 square cm
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
Are they the lengths of the diagonals?
there are two diagonals and one of the lenghts is 30 and the other number is on the outside of the rhombus.
Without being able to see a diagram I'm afraid I can't be much help with this problem, sorry.
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.
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.
it's only 3ft and its an equilaterial triangle.
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
so are both sides going to be 1.5
how did you get 2.59807621