Questions on Geometry: Circles and their properties answered by real tutors!

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Question 534131: center at (-4,5) and tangent to the line y=4?
how can i solve this and plot this on the graph
Click here to see answer by KMST(1863)

Question 534149: write the general equation of a circle that is tangent to the x-axis, with center located at (4,-6).
Click here to see answer by stanbon(57216)

Question 534153: determine the equation of the circle whose center is at (4,5) and tangent to the circle whose equation is x^2+y^2+4x+6y-23=0.
Click here to see answer by Alan3354(30957)

Question 534153: determine the equation of the circle whose center is at (4,5) and tangent to the circle whose equation is x^2+y^2+4x+6y-23=0.
Click here to see answer by KMST(1863)

Question 534151: if (3,-2) lies on the circle with center (-1,1) then what is the equation of the circle?
Click here to see answer by Alan3354(30957)

Question 534150: find the equation of the circle with center on x+y=4 and 5x+2y+1=0 and having a radius of 3.
Click here to see answer by Alan3354(30957)

Question 534148: is the point (3,4) inside, outside or on the circle with equation (x+2)^2+(y-3)^2=9.
Click here to see answer by Alan3354(30957)

Question 534144: find the equation of a circle whose center is at (2, -4) and radius 5.
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Question 534146: find the center and radius of the circle with equation x2-4x+y2-6y+9=0.
Click here to see answer by Earlsdon(6287)

Question 534333: Given the equation (x-3)^2 + (y+2)^2 = 9, (a)find the center and radius; (b)graph; (c)find the intercepts, if any. Please help! I am completely confused.
Click here to see answer by Earlsdon(6287)

Question 535695: find the equation of the circle satisfying the given conditions and sketch its graph: center @ (3,4) and touching the line x=6
Click here to see answer by Earlsdon(6287)

Question 535885: A farmer tethers her goat to the corner of a 40-by-20-foot barn in a fenced lot that is 140-by-110 feet. She also has an herb garden next to part of the barn. The goat is tethered on a 50-foot rope to the corner of the barn farthest from the herb garden. What is the original grazing area? The original grazing area includes all the grass area the goat could reach including that section of the herb garden that the goat ate. I attempted the problem and found what I do not know to be a correct answer of 4415.625 square feet, however, I just want to make sure. Thank you very much in advance!
Click here to see answer by KMST(1863)

Question 536015: Two circles both with radius 4, the centre of each circle lies on the circumference of the other, what is the exact area which is common to both circles?
Click here to see answer by htmentor(788)

Question 536317: Find the equation of the circle of radius 5 whose centre lies on x-axis and passes through the point (2,3).
Click here to see answer by Alan3354(30957)

Question 536449: three circles are tangent to each other externally. The distance between their centers are 23m, 25m, and 20m respectively.Find the area of the curve between the three circles.
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Question 536649: If the circumfrence of a circle equals 36 pi, then the Area = ?
*write your answers in terms of pi.
Click here to see answer by rfer(12644)

Question 536654: a bicycle wheel makes five resolutions. determine how far the bicycle travels in feet. The diameter is 40 inches. Use 3.14 for pi
Click here to see answer by richwmiller(9135)

Question 537114: A circle has an area of 75 square centimeters. What is its radius?
Click here to see answer by Earlsdon(6287)

Question 537293: a circle has a diameter of 6 inches. what is the circle's area, in square inches?
Click here to see answer by Alan3354(30957)

Question 538187: Find the arc length of a 30 degree sector of a circle with a radius of 9 in.
Click here to see answer by josmiceli(9647)

Question 538284: Find the arc length of a 30 degree sector of a circle with a radius of 9 in.

Click here to see answer by fcabanski(872)

Question 538337: Find an equation of the circle: (2,-5), (18,25)
Click here to see answer by KMST(1863)

Question 539220: Given the circle (x - 6)2 + (y + 2)2 = 9, determine if the line with an equation of 3x - 2y = 12 is a tangent to the circle, a secant to the circle, or neither.

Click here to see answer by AnlytcPhil(1276)

Question 539195: A circle is Defined by the following equation,
3x^2+3y^2-30x+27=0.
what is the radius?
Click here to see answer by htmentor(788)

Question 539405: What is the circumference of the circle whose equation is given: x^2 + y^2 = 9
Click here to see answer by KMST(1863)

Question 540603: http://s1118.photobucket.com/albums/k608/OddBlackAngel/?action=view¤t=ExamFigure7.jpg
1) What is the angle between the tangents at T?
A. 30 degrees
B. 60 degrees
C. 75 degrees
D. 90 degrees
2) How long is arc ACB if the radius of the circle is 6? Round your answer to two decimal places.
A. 6.29
B.12.57
C.18.86
D.25.13
3) How many radians are contained in the angle AOT? Round your answer to three decimal places.
A. .459
B..955
C.1.047
D.2.178

Click here to see answer by Alan3354(30957)

Question 540930: If we have 2 circles that intersect... each one attaching to the midpoint of the other circle, how do we explain using information about circle, why you know that the sides are all the same length.(Which would be a triangle drawn in the intersection between both circles) Please help me... Thank you :)
Click here to see answer by Theo(3458)

Question 542247: Find The Area of a Circle with a Circumfrence of 31.4cm? (Please explain and/or Show The Work On How You Got The Answer.)
Click here to see answer by friesr(113)

Question 542460: The endpoints of the diameter of a circle are (-3, 2) and (5, -6). Find the center and radius of the circle.
Click here to see answer by htmentor(788)

Question 542467: A printing press has 8 machines, each of which has a speed of 3 600 prints per hour. It costs P50 to set up each machine for a run and (100+60 n ) pesos to run n machines for 1 hour. How many printing press machines should be used to produce 50 000 copies of calendars most profitably?
Click here to see answer by Theo(3458)

Question 542473: a circle with a 2 cm diameter is drawn inside a circle with a 6 cm radius. what is the area between the circles?
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Question 542852: How do you find the area of a circe with a diameter of 4.8 dm?
Click here to see answer by rfer(12644)

Question 545171: A tennis court has a baseline at each end. Which part of the tennis court is equidistant from the midpoints of the two baselines? Explain.
Click here to see answer by josmiceli(9647)

Question 545814: 1.What is the area of a circle that has its center at (6,6) and touches both axes?

Click here to see answer by JBarnum(2044)

Question 546953: A square and a circle intersect so that each side of the square contains a chord of the circle equal in length to the radius of the circle. What is the ratio of the area of the square to the area of the circle? Express your answer as a common fraction in terms of pi.
Note: the diagram is a square, with a circle that has a diameter bigger than the square, and there are eight points where the circle intersects, 2 on each side of the square. From what i understand, the radius of the circle extends from the center out past the edge of the square, and the chord is only a fraction of one side of the square.Help? Thank you very much.
Click here to see answer by KMST(1863)

Question 547403: how do you break 6feet 6inches into two problems then add them together-in trying to convert a basket ball player's height for a project
Click here to see answer by josmiceli(9647)

Question 547631: explain how to draw a circle that is circumscribed about a triangle. what is the center of a circle called? describe its radius.
Click here to see answer by richard1234(5390)

Question 548104: 9. A circle has a radius of 5 units, centre on the line y-2=0 and passes through the point (2,-1). Find the two possible coordinates of the centre of the circle and the respective equations of the circles.

Click here to see answer by stanbon(57216)

Question 548341: State the amplitude and period of each function:
Y=6sin60
Y=-2cos20/3
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Question 548397: In the coordinate plane ,any circle which passes through (-2,-2) and (1,4) cannot also pass through (x,2006). what is the value of x
Click here to see answer by Alan3354(30957)

Question 548463: the radius is 6 meters around the pond i want add a rail and ts 1.5 meters tall. how many of raling do i need

Click here to see answer by Alan3354(30957)

Question 548617: Find the missing characteristics of the center of the circle with the given characteristics.
The center is (-3,b), the radius is 5, and point on the circle is (2,-2). I found the missing coordinate counting squares but i want to do it algebraicly.
Click here to see answer by mananth(12270)

Question 549202: In a circle, a central angle that measures 36° intercepts arc AC. What is the measure of arc AC? 18° 36°
72° 144°

Click here to see answer by KMST(1863)

Question 549713: if ABCD is a square of area of 4 sq cm, find the radius of the circle that passes through all the vertices of the square.

Click here to see answer by mananth(12270)

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