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What is the chord of a circle?
Take any circle and draw a straight line through it anywhere so that the line intersects the circle at two distinct points. The segment between the two points on the circle is the chord. A diameter, that is, a line segment through the center, could be a chord. But any shorter segment drawn through the circle and intersecting the circle at those two distinct points is a chord. It's just that simple. Need a link? You'll find one below.
How do you get a radius?
# Find the center of the circle # Draw the line of the radius from the center to the circumference # Finish
How do you find the area of a circle without knowing the radius?
If the circumference or diameter is given then you can find the radius or simply measure the distance from the centre of the circle to the circumference.
How do you find the center of the circle?
-- Draw any two random chords of the circle. -- Construct the perpendicular bisector of each chord. -- The perpendicular bisectors intersect at the center of the circle. All of this can be done with a compass, an unmarked straight-edge, and a pencil.
How do you find the diameter of a sphere?
R (radius) X2. The radius is half the circle from the center of the circle. The diameter is just straight across.
How do you find center of a circle given 3 points on the circle?
You have points A, B, and C. Using a compass and straight edge, find a perpendicular bisector of AB (that is, a line that is perpendicular to AB and intersects AB at the midpoint of AB. Next, find a perpendicular bisector of BC. The two lines you found will meet at the center of the circle.
How do you find the center or midpoint of a circle given one endpoint of the diameter?
to be honest I dont know
What is a center coordinate of 2 points known circle?
Knowing two points on a circle does not define a unique circle, so it is impossible to find the centre of the circle as there are infinitely many centres possible.
How to find the radius of a circle?
divide the diameter(the length of a straight line passing through the center of a circle and connecting two points on the circumference)by 2
What is the answer A circle of center (-3 -2) passes through the points (0 -6) and (A 0). Find A.?
The value of A works out as -7.582575695 because both points will have an equal distance of 5 units from the center of the circle (-3, -2)
Does a circle have an area?
A circle *encloses* an area, and the "area of a circle" is the area it encloses, πr^2. A circle is a 1-dimensional curved line; it is a set of points equidistant from a given point (the center), with that distance being the radius of the circle. This means the inside of the circle is not part of the circle (it's called a disk if you include the inside points).To find the area, multiply pi (π) by the radius squared (r^2), so you get πr^2.Yes, it does.
How do you work out the radius of a circle without knowing the area?
This depends on what information you are given.If you have the circumference of the circle, you know that:c = 2πr∴ r = c / 2πIf you have the diameter of the circle, it's radius is half of that:r = d/2If you are given any three points on the circle's perimeter, you can use those to find the radius. This can be done with the following steps:Take any two of those three points, and find both their halfway point and the slope of the line on which they lie.With those, work out the equation for a line that passes through that halfway point, and is perpendicular to the line on which those points lie.Repeat those two steps with any other two of the three points .With the two lines you now have, find their point of intersection. That will be the center of the circle.Now find the distance from that center point, to any one of your three given points. That is the circle's radius.Also, if you have an equation for the circle, then you can work it out that way. The equation would need to be rearranged into the format (x - a)2 + (y - b)2 = r2. The last variable, "r", is your radius.
How do you find radius of a circle?
Draw a line from any part on the outside of a circle to the exact center of the circle. * * * * * That is fine if you know where the center is but not much use if you are just given a circle and do not know where the exact centre is. In this case: Draw a chord - a straight line joining any two points on the circumference of the circle. Then draw the perpendicular bisector of the chord. Draw another chord and its perpendicular bisector. The two perpendicular bisectors will meet at the centre.
What is centripetal acceleration and find its magnitude and direction in the case of uniform circular motion?
Centripetal acceleration is the acceleration that points towards the center of a circular path. Its magnitude is given by a = v^2 / r, where v is the speed of the object and r is the radius of the circle. The direction of centripetal acceleration is towards the center of the circular path.
How do you find the centre of a circle given part of a radius?
You would have to know the length of the radius. The center of the circle is at one end of the radius. If you just know where some part of the radius is, and not that the part touches the circle then you cannot know where the center is without at lest a point on the circumference.
Where do you find the radius?
A radius is the distance from the center point of a circle to the outside. To find the radius, you'd draw a line from the center of a circle straight out until it hits the circle itself, then measure the length of the line you just drew. If you are given a diagram where only the diameter is shown (the distance from one side of the circle to the other), just take half the diameter.
How do you find the radius of the circle when you know the center and a point on the circle?
measure it
