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All about circles in geometry
Is the graph 4X^2 + 4X + 4y^2 + 24y - 107 = 0 a circle? If so how do I find the radius?
by Amber_F7438 on February 9th, 2012
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6 answers
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in Circle
by Anonymous on December 31st, 1969
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no answers
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in
Two chords of a circle cannot bisect each other, unless they are both diameters.
State whether 'True' or 'False':-
by Ganesh on December 23rd, 2011
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one answer
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in Circle
Why are circles so round?
by Weylon on December 4th, 2011
| 3 people like this
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13 answers
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in Circle
What theorem would I have to apply to a quadrilateral inside a semicircle?
by Mr_T7336 on August 7th, 2011
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2 answers
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in Circle
Besides a circle, what are some other things that don't have an ending?
by TattooMama on April 20th, 2011
| 8 people like this
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32 answers
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in Circle
Every point on a circle is ________ from its centre ?
by Rahul_M on January 8th, 2011
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one answer
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in Circle
You have parametric equations x = t^2-4 and y = t+2
How is y related to x?
by WarHorseLeBron on July 13th, 2010
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one answer
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in Circle
If a circle has a radius of 12 feet, what is its circumference most nearly?
by Dantonio on November 30th, 2009
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one answer
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in Circle
In geometry, What is called "right angle"?
by Alexander on November 10th, 2009
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4 answers
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in Circle
A farmer has four straight segments of fence of lengths 60,70,90 and100 feet, which cannot be cut or bent. The farmer wants to fence off the largest possible area. How?
by Alexander on November 9th, 2009
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2 answers
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in Circle
Why do three common chords of three intersecting circles always intersect at one common point? http://www.mowmowmow.com/math/cabri/d10.gif
by Alexander on November 6th, 2009
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no answers
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in Circle
How many snooker balls may be placed around another snooker ball of same size, so that all balls touch the one in center?
by Alexander on November 5th, 2009
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one answer
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in Circle
A Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of the rectangle. What is the area of the largest possible Norman window with a perimeter of 30 feet?
by Anonymous on November 2nd, 2009
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one answer
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in Circle
How many collisions will occur with the fifth ball? - - I have a ball A of mass one pound and a set of five balls 1lb, 100lb, 10000lb, 1000000lb and 100000000lb. For the lack of space I will continue the question in the answer space....
by Alexander on October 30th, 2009
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one answer
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in Circle
What is the most weird way to measure the number π?
by Alexander on October 28th, 2009
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2 answers
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in Circle
A circle has radius r and circumference c. Solve this equation exactly for r: c/(2r) = 22/7? *** I have to warn you : this question is of my elder brother and he majors in math at a university.
by Alexander on October 28th, 2009
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2 answers
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in Circle
What does it take to prove that all circles are similar, that is similar in strict geometric sense? 'Cause if not all circles are similar, then how can we use the same constant π=22/7 for a ratio of circumference to diameter of all circles?
by Alexander on October 28th, 2009
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one answer
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in Circle
What is the area if the circumference is 32 yd?
by Anonymous on October 25th, 2009
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2 answers
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in Circle
In the figure above, B is the center of a circle with radius r and ABCD is a rectangle. The length of diagonal AC is?
by Anonymous on October 24th, 2009
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3 answers
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in Circle
If I use a rope that is r=10,000 kilometer long to draw a circle on Earth, what will be circumference of such circle? What is the formula?
by Alexander on October 21st, 2009
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one answer
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in Circle
If the diameter of a circle is 11 inches; what is the circumference of the circle?
by Nancy on October 14th, 2009
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6 answers
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in Circle
How many points are there inside a circle
by Alexander on October 14th, 2009
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one answer
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in Circle
Would PI have been better being a ratio of the Radius to the Circumference rather than the Diameter to the Circumference, being an Engineer, 2Pi is often used.
by LEFTANGLE on October 14th, 2009
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3 answers
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in Circle
Why is the value of PI chosen as the ratio of the radius to the circumference rather than the diameter to the circumference?
by LEFTANGLE on October 14th, 2009
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one answer
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in Circle
In a circle, the length of each of two parallel chords is 10. If the distance between these two chords is 24, what is the length of a diameter of this circle?
by MathQuery on October 5th, 2009
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5 answers
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in Circle
Circles are drawn with four vertices as the centre and radius equal to the side of a square. If the square is formed by joining the mid points of another square of side 2root(6), find the common area to all the four circles.
by Anonymous on September 27th, 2009
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one answer
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in Circle
If i have a 100mm (diameter) circle what size circle would i need for it to have a SURFACE AREA 5x greater than the original?
by silvester randolph on September 23rd, 2009
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3 answers
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in Circle
What can you see right now that is round?
by robinhug on September 14th, 2009
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17 answers
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in Circle
Graph the circle 4x^2+4y^2-16x-24y+43=0
by Anonymous on September 11th, 2009
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one answer
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in Circle
Draw any circle and draw any cyclic quadrilateral in it. Name the quadrilateral A-B-C-D,,join AC and BD (diagonals) ....
prove that: AC x BD = AB x CD + AD x BC
by Anonymous on August 25th, 2009
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no answers
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in Circle
The diameter of wheel is 140cm.speed of the car is 66kmph.what is number of revolutions of wheel per minute?
by aishwary on August 22nd, 2009
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one answer
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in Circle
Why circle is round
by karthi on August 18th, 2009
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8 answers
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in Circle
Find the standard equation of the circle with center (3,5) that is tangent to the line 12x-5y+2=0.
by Anonymous on August 4th, 2009
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3 answers
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in Circle
Is the circle / wheel infinite polygon?
by socratus on August 1st, 2009
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one answer
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in Circle
What has the shape of a circle?
by - alluseek - on July 23rd, 2009
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7 answers
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in Circle
A target consists of five concentric circles, each with a radius 1 inch longer than that of the previous circle. Calculate the area between the third and fourth circles from the center.
by Anonymous on July 20th, 2009
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one answer
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in Circle
A pipe 500mm long contains 8.836 litres of water. Calculate the diameter of the pipe in milimetres
by Anonymous on July 19th, 2009
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2 answers
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in Circle
What is the diameter of a 38" Circumference?
by SealHarbor on July 13th, 2009
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one answer
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in Circle
How can we calculate value of 'Pi'?
by Sunny on July 6th, 2009
| 1 person likes this
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6 answers
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in Circle
I have a flat drive pulley with 22mm dia. and 10mm dia. cylinders. I want to turn that to a 60:1 ratio with maximum pulley size of 98mm and minimum size of 15mm dia. Can use a double reduction if required. How do I work out the sizes of pulleys required?
by ATdoors on June 16th, 2009
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one answer
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in Circle
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