Question about The Learning Company Achieve! Math & Science Grades 1-3 (381933) for PC, Mac

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


Posted by on

  • 1 more comment 
  • kenpie Nov 01, 2008

    the answer to my problem (whats the area of an ellipse part circle with a long axis of 2.500mm and radius is .425) is the area is 0.835 but how have i achieved this.

  • kenpie Nov 02, 2008

    You will never know how relieved I am and how helpfull your explination of the equation has been, as I have now realised where I went wrong and came to think the answer was .834 I have ended up with a 1/4 section of the Ellipse when the true area of the problem is double that. 3.1416 x 2.500 x .425 :- 2 = 1.66 not 3.1416 x 2.500 x .425 ;- 4 = .834 This might seem trivial to most but i needed to find the area of this as its the measurement of a bay window floor and needed the accurate measure, once again thank you very much, your on my christmass card list. cheers

  • Loringh
    Loringh May 11, 2010

    Need more details. finish your description of your situation



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.

    Vice President:

    An expert whose answer gotĀ voted for 100 times.


    An expert who has written 50 answers of more than 400 characters.

  • Expert
  • 185 Answers

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

Posted on Nov 02, 2008

  • Loringh
    Loringh Nov 03, 2008

    Glad I could help.

    Would appreciate your positive feedback to FixYa



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer


Since the area of a whole circle is pi times the radius squared, the area of half the circle is one half times pi times the radius squared.

Apr 30, 2014 | Computers & Internet

1 Answer

Help finding the circumferance of a circle

The circumference of a circle is given by the expression
Circumference= 2* PI* Radius of circle
The area is given by
Area of a disk with radius R = Pi* R*R or PI*R^2
Area= PI*R^2

Mar 11, 2014 | SoftMath Algebrator - Algebra Homework...

1 Answer

The radius of a circular pond is 14 m.Find the radius of another circular pond whose area is one-fourth of the area of this circular pond.Answer of this question.

The area of a circle is pi * r^^2.
For the first pond, the area is pi *14^^2. Let's say that is A
For the second pond the area is pi * r^^2. Let's say that is a.
But a = A/4 or, conversely 4a = A.
But A = pi*14^^2 = 4a = 4(pi * r^^2) or
pi*14^^2 = 4(pi*r^^2) or
pi*14^^2 = 4pi*r^^2 or
14^^2 = 4*r^^2
196 = 4*r^^2
196/4 = r^^2
So a pond of radius 7m has an area a quarter of a circular pond of 14m.

Jan 26, 2014 | Mathsoft Computers & Internet

1 Answer


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...

1 Answer

I have a tube 7.5m long. The internal diameter is 172mm. How do I work out, what the cubic capacity is for liquid of this tube?

The volume of a tube is the area of the base times the height.
In your case you were given the diameter of the tube.
D = 172mm
I converted this to meters right away so that the units are the same.
The area of a circle is pi x (radius)^2
Divide the diameter by 2 to get the radius.
R = .086m
Pi = 3.14159....
The area of the base of your tube is pi x (.086)^2
A = 0.023 m^2

To find the volume of the entire tube, multiply the height by the area.

V = H x A
V = 7.5m x 0.023m^2

V=0.174 m^3

Oct 13, 2009 | The Learning Company Achieve! Math &...

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

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.

Oct 11, 2009 | Mathsoft StudyWorks! Mathematics Deluxe...

1 Answer

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

Mar 18, 2009 | Computers & Internet

1 Answer

Radius of an ellipse

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)

Feb 19, 2009 | 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


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

Not finding what you are looking for?
The Learning Company Achieve! Math & Science Grades 1-3 (381933) for PC, Mac Logo

254 people viewed this question

Ask a Question

Usually answered in minutes!

Top The Learning Company Computers & Internet Experts


Level 3 Expert

7993 Answers


Level 3 Expert

98879 Answers


Level 1 Expert

26 Answers

Are you a The Learning Company Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides