187 Answered Questions for the topic Circles

Circles

01/29/16

finding centre and radius
find the centre and radius of the circle with segment of the line x + y = 1 cut off by coordinate axes as diameter
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Circles

12/15/15

if the equation x2 + y2 - 8x +12y = -2 represents a circle
1 Center and radius2 Equation of a tangent to the circle through (5, 1)2 Equation of a chord that coincides with the diameter and includes (5, 1)2 End point coordinates of the preceding
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11/19/15

Finding the radius of a circle
What is the radius of a circle in which an angle of 3 radians cuts off an arc length of 30cm?
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11/19/15

What is the radius of a circle in which an angle of 3 radians cuts off an arc length of 30 cm?
What is the radius of a circle in which an angle of 3 radians cuts off an arc length of 30 cm?
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11/19/15

Angles, Circles, Radians, Trig, Calc
Convert the following angles, assuming the radius of the circle is 1:a.) Convert 120? to radiansb.) Convert 2 radians to degrees
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10/28/15

How long is the arc subtended by an angle of 4p/3 radians on a circle of radius 15cm?
How long is the arc subtended by an angle of 4π/3 radians on a circle of radius 15cm?
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09/19/15

How long is the trace of water left on the floor?
A wet bicycle tire leaves a trace of water on the floor. The tire has a radius of 14 inches, and the bicycle wheel makes 3 full rotations before stopping. How long is the trace of water left on the... more
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09/13/15

How much more pizza do you get in a large pizza that has a diameter of 1 inches than you do in a small pizza that has a diameter of 10 inches?
The teacher gives an hint. You need to find the area of each pizza.    I'm not so sure how to do this. 
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Circles Algebra 1

09/07/15

Given three points on a circle, find the equation in standard form.
(1,1) (1,-5) (-3,3). What do the three points have in common?Are all three points the same distance from the center?What does that different represent with respect to the circle?
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Circles

08/20/15

what is a director circle
 it is based on the chapter circle i cannot understand this concept   What is a director circle?
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08/05/15

Question about Circles and a Tangent Line. Help, please?
11. Determine whether a tangent line to circle O is shown in the diagram, for AB = 7.75, OB = 4, and AO = 8.75. Explain your reasoning. (The figure is not drawn to scale.) --- I figured it out... more
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Circles

07/25/15

circles topic
ABC is a triangle which is inscribed in a circle with a radius 7 units and if AB is the longest chord of the circle then which of the following could be the area of triangle... more
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07/01/15

Circle Equation with center and radius
Which of the following is an equation of the circle with the center at (-2,3) and a radius of 5 coordinate units in the standard (x,y) coordinate plane?A) x^2+y^2 +4x-6y=5B) x^2+y^2+4x-6y=12C)... more
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Circles

06/18/15

How many square feet of tiling will be used? (Round your answer to the nearest hundredth)
Circular pool measured 40 feet from one end to the other Passing through the center. The bottom of the pool needs to be covered with new tiles
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06/11/15

The radius of a circle is 6 meters. What is the length of a 135° arc?
i do not know this question i need help -- The radius of a circle is 6 meters. What is the length of a 135° arc?
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Circles

06/07/15

Circles and parabola
find the equation of a parabola with vertex 3,5 and directrix y=7
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06/04/15

(a) Find the angular speed of the wheel sprocket. (b) Find the speed of the bicycle. (Assume that the wheel turns at the same rate as the wheel sprocket.)
The sprockets and chain of a bicycle areshown in the figure. The pedal sprocket has a radius of 4 in.,the wheel sprocket a radius of 2 in., and the wheel a radius of13 in. The cyclist pedals at 40... more
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Circles

05/31/15

Write the standard equation of the circle with center (5,-4) and radius 3
Its a geometry problem.
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05/20/15

A bike tire has a radius of 30 cm. If the tire makes one rotation every 4 seconds, how far will the rider travel in 1 minute?
 A bike tire has a radius of 30 cm. If the tire makes one rotation every 4 seconds, how far will the rider travel in 1 minute?
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Circles

04/08/15

Find total no. of common tangents to the circle x^2 + y^2 -4x -6y-12=0 and x^2+ y^2 +6x+18y +26?
it belongs to coordinate-circles
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Circles Square

04/03/15

What is the answer of this
Two congruent chords AB and CD which are not diameters, intersect at right angle in P. O is the centre of the circle. If M and N are the mid-points of AB and CD respectively, then prove that... more
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Circles Conic Sections

03/26/15

The equation of a standard pitcher’s mound in baseball is (x+5)^2 + (y+7)^2=81 Find the diameter and center of the pitcher’s mound.
Here are the choices:   A: C(-5,-7) d=9   B: C(-5,-7) d=18   C: C(5,7) d=9   D: C(5,7) d=18
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Circles Geometry Area

03/25/15

Surface area of circles
In which sphere is the ratio surface area/volume greater?  A.) A smaller Sphere B.) A larger Sphere
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Circles

03/24/15

how do i find the missing sides of a sector if i know the degrees and circumference of the sector?
My guestion is that the sector has the circumference, and the degree.  
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Circles

03/19/15

circle radius
a circle has a radius of 1 inch. what is the length in inches, of an arc subtended by a central angle of 135degrees
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