187 Answered Questions for the topic Circles

Circles

02/17/18

If two circles intersect at two points, prove that their centres lie on the perpendicular bisector of the common chord.
This is question from NCERT book class 9. I want the solution before 18 hours. Because next day I have exam. 
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01/21/18

a circle has the equation x^2+y^2=50. Find the equation of the tangents to the circle that are parallel to x+y=8
I managed to do all the questions apart from this one, and have no idea how to even start it
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Circles

12/21/17

If r and R are the radii of smallest and largest circles which passes through (5, 6) and touches the circle , then value of r*R=p/q is then p+q is _________?
 The answer is 45.Please send the complete solution.
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Circles

12/17/17

May I ask about Tau and Pi ?
Teacher, I ever heard that Tau was the one true circle constant. Then 2Pi?   Aren't they same ?
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12/14/17

Find the degree measure of the arc of a sector
Find the degree measure of the arc of a sector whose area is 18π square units given that the length of the radius is 12 units
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Circles

12/14/17

The graph on the right shows a circle with its center. There are 40 stone blocks situated uniformly on the circle. The diameter of the circle is 27 meters.
a. What is the radius of the circle? b. What is the circumference? c. Since there are 40 stones located on the circumference, how far apart are the centers of the stones? The stones are all of... more
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Circles

11/05/17

Find the standard form of the equation for the circle with the following properties. Endpoints of a diameter are (8,10) and (2,12)
help asap
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Circles Math Geometry Circle

10/24/17

what are the coordinates of the center and the length of the radius of the circle?
The equation of a circle is x^2+y^2-2x+6y+3=0. What are the coordinates of the center and the length of the radius of the circle.
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Circles

10/22/17

The measure of ∠1 = 45 90 180
The measure of ∠1 = 45 90 180
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Circles Geometry

10/02/17

Two concentric circles of radius 12cm and 13cm are drawn. The chord of the larger circle is tangent to the smaller circle. Find the length of the chord.
Draw an appropriate figure
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Circles

09/18/17

find all points having an x-coordinate of 9 whose distance from the point (4, -4) is 13
There are no additional details
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08/20/17

Circles Intersecting
If I have a circle A and a circle B, and they are intersecting, how can I find the point along circle A's circumference that is closest to the center of circle B knowing the radius and x and y... more
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Circles

08/18/17

(X-1/2)^2+(y-0)^2=1/2^2 in general form
Standard form to general form
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Circles

05/28/17

How do I find the area of a circle using points with variables?
This is the whole question. On a coordinate plane, a circle passes through the points (x, y) and (-x, y). Which of the following represents the area of the circle?   A. 4πx B. πx2/4 C. πx2 D.... more
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Circles

04/06/17

A segment of a circle has a 120 arc and a chord of 8in.
 A segment of a circle has a 120 arc and a chord of 8in. Find the area of the segment.
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Circles Construction

03/19/17

Constructing tangents to a circle from an external point.
I learned a method of constructing tangents to a circle O from an external point P which involves (a) drawing segment OP, (b) finding the midpoint M of OP, (c) constructing circle M with radius MP,... more
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03/10/17

I'm not understanding these questions and I really need help answering them. Can someone please help me?
1. Why is circle 1 similar to circle 2?Circle 1: center (−1, 10) and radius 4.8Circle 2: center (−1, 10) and radius 1.2   A) Circle 1 is a dilation of circle 2 with a scale factor of 4. B) Circle... more
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Circles

03/02/17

if chord of 10 cm is drawn in a circle of 8cm, then find the area of both segments?
cant use trignumetry Difficult questions Based on areas of circles
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Circles

01/20/17

Circle Problem, finding shortest route.
If I get 2 particular angle given in a 0 to 360 form, how would I know (math wise) what is the shortest route to join the two. Ex : if I have 35 degree(me) and 315(destination) I would be better to... more
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01/19/17

circles and angles (radians and degrees)
A cell phone tower sends a signal 3 miles in all directions. If you are driving on a raod that goes straight from 3.5 miles north of the tower to a location 4 miles west of the tower, during what... more
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01/18/17

Word problem
 Suppose you inscribe a square in a circle of radius are us all four corners of the square lie on the circle the area of that square is? 
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Circles

01/10/17

need help to this problem
A circle passes through (-2,4) and touches the y-axis at (0,2). Which one of the following equations can represent a diameter of this circle :-                  (a) 4x+5y-6=0 (b) 2x-3y+10=0 (c)... more
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Circles Math

11/11/16

Circle related doubt
Number of rational points on circumference of circle having center(pi,e)?
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Circles Math Help Arcs

11/04/16

What's the shortest distance between the endpoints of the arc?
If arc AB has a length of 12pi and represents 3/4 of the circumference of circle O, what's the shortest distance between the endpoints of the arc?
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11/04/16

What's the radius of the circle in terms of a and b?
Circle C is drawn on a coordinate plane, centered at the origin. If the point (a,b) lies on the circumference of the circle, what's the radius of the circle in terms of a and b?
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