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Radius of an ellipse

I know major axis .910 and minor axis .710 how do i find the raduis of both axis

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Hello,
Sorry to say it but the question does not make sense. A circle is a figure that is perfectly defined by the knowledge of its center (or centre depending of the English you use) and its radius.

An ellipse is perfectly defined if you know its two foci (plural of focus) and the length each of its two axes (major and minor).
Is it the perimeter, the area, the parameter p of the ellipse you are lookong for.

Hope it will help you focus on your real the question.(The pun is intended)

Posted on Sep 07, 2009

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X and y intercepts


First of all you equation is not one : it has nothing on the right side of the = sign. But to answer the general question let us write the equation as 50+25x-5y=0
X-intercept (also know as roots) There may be several
Definition: X-intercepts are those values of the independent variable x for which y=0. For a straight line there con be at most 1 x-intercept.
To find the intercept, set y=0 in the equation of the line and solve for x
50+25x-5(0)=0 or 50+25x=0. The solution is x=-(50/25)=-2

Y-intercept (also know as the initial value. There can only be 1 y-intercept, otherwise the expression does not represent a function.
Definition: It is the value of the dependent variable y when x=0 (where the function crosses the y-axis
To find it, set the x-value to 0 in the equation of the line.
50+25x-5y=0
50+25(0)-5y=0, or 50-5y=0. The solution is y=50/5=10
The straight line cuts the x-axis at the point (-2, 0) and the y-axis at the point (0,10)

Jan 28, 2014 | Computers & Internet

1 Answer

There is an equilateral triangle. in it there are three coins of equal radius is placed. find the radius of the coin.


how big is the triangle? if the coins are a mile in diameter doesnt mean you cant have an equilateral triangle with legs of 32 miles long.

or are you asking for the equation?

i will send you on the path to the equation.

if you draw a circle on a piece of paper then draw a triangle around it where is the center? if the triangle were a perfect equilateral then the circle would be a perfect circle touching the sides of the triangle.

its important to know where the center is because the center of the circle to the edge of the circle is the radius.

so the center of a triangle is the center of the circle. therfeore the radius of the circle will equal hieght/2...

thinking that way you can say that if there were three coins then the center of the triangle cant be occupied by a coin but is very close to an edge. where is the center of the coin?

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1 Answer

Area=3.14*4in*4in


This must be the area of a circle with a radius of 4 in.. The formula for this is Pi (3.14) X radius X radius.
3.14 X 4in X 4in = 50.24 inches squared

Jan 28, 2010 | Mathsoft StudyWorks! Mathematics Deluxe...

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Why is it true that at x-intercept, the value of y is0, and at y-intercept the value of x is 0?


The x intercept is where the value of y when graphed lands directly on the x axis. The value of y anywhere on the x axis is zero. The same is true for the y intercept producing an x value of zero. The point at which the graphed line intersects the y axis gives an x value of zero. The value of x anywhere on the y axis is zero.

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1 Answer

A pool with a radius of 2.5 metres surrounded by a path 0.8 metres wide what is the perimetee of the pool .using the value of 3.142


Hello,
You must have been taught the relation between the circumference (perimeter) of a circle, the radius and pi. Use it to calculate the perimeter. It is true for all circular figure.
Depending on what is really asked (the perimeter of the actual pool where you find the water, or the general pool area where no shoes are allowed)
1st case: use the radius that was given.
2nd case: the total radius is the radius given plus the width of the path.

If you do not have a formula for the perimeter that involves the radius, but have one that involves the diameter you can use it too, knowing that the diameter is twice the radius or the radius is one half of the diameter.

As you might have guessed I was not going to make things too easy for you by providing a ready-made answer, but I gave you all the hints that will help you solve the problem.

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Find the equation of the ellipse whose center is at (0,0), one vertex is at (3,0) and one end of minor axis is at(0,2)


find the volume of the largest cylinder with circular base that can be incribed in a cube whose volume is 27cu.in?

Mar 18, 2009 | Computers & Internet

1 Answer

Coordinates


This is an equation of a straight line, and we can easily find the the coordinates where this line intersects the axis in following ways:-

for x-axis:-
put y=0, 4x+2*0=8
4x =8
x =8/4
x =2
so intersection coordinates ate (2, 0)

for y-axis:-
put x=0, 4*0+2y=8
2y =8
y =8/2
y =4
so intersection coordinates ate (0, 4)

Thanks

Zulfikar ali
ali_zulfikar@yahoo.com
9899780221

Jan 26, 2009 | SoftMath Algebrator - Algebra Homework...

1 Answer

What is the forular/working out of- ellipse with a long axis 2.500mm and short axis .850 (double the 0.425 radius) the area is 1.669 thus the area of the part circle is 0.835. what is the formular


I'm not sure what your ellipse looks like but the equation for the area of an ellipse is given by:

pi times the long axis times the short axis

pi = 3.1416
The length of the long axis is from the center of the ellipse to the outer edge of the ellipse
The length of the short axis is from the center of the ellipse to the outer edge of the ellipse

Hope this helps Loringh

Nov 01, 2008 | The Learning Company Achieve! Math &...

1 Answer

What is the area of a semi circle the diameter is 2.500mm the radious is .425mm the circumfrence is 3000mm


You cannot have a semicircle that has a diameter of 2.500 mm and a radius of .425mm and a circumference of 3000mm

Circumference is equal to pi times the diameter. pi is = 3.14

The radius of a circle is always 1/2 the diameter

Area of a circle is pi time the radius squared


Loringh

Oct 30, 2008 | The Learning Company Achieve! Math &...

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