0
Add your answer:
Earn +20 pts
What is a segment whose endpoints are on a circle?
A chord. a diameter also has endpoints on a circle, the only difference is a diameter goes through the center point and a chord doesnt have to go through the center. a diameter is considered a chord.
What is the formula for sine?
Sin, Cos and Tan is the formula for sine. A right-angled triangle is a triangle in which one of the angles is a right-angle. The hypotenuse of a right angled triangle is the longest side, which is the one opposite the right angle. The adjacent side is the side which is between the angle in question and the right angle.
How many feet go around a 20 ft circle?
The circumference of a circle can be calculated using the formula C = 2πr, where C is the circumference, π is a mathematical constant approximately equal to 3.14159, and r is the radius of the circle. In this case, the radius is half of the diameter, so for a 20 ft circle, the radius would be 10 ft. Plugging this value into the formula, we get C = 2 x 3.14159 x 10 = 62.8318 ft. Therefore, approximately 62.83 feet would go around a 20 ft circle.
What is the best estimate of the circumference of a circle 2 units?
The Circumference of a circle (C) equals the number "pi" times the diameter of the circle (d). "pi" (3.14159...) is a number which you can never find the value of precisely, the numbers after the decimal point go on for ever. Given this information you can calculate what you need to know about your circle.
A quarter of a circle plus an eighth of a circle is what percent of a circle?
A quarter of a circle plus an eighth of a circle is what percent of a circle?
What is a segment whose endpoints are on a circle?
A chord. a diameter also has endpoints on a circle, the only difference is a diameter goes through the center point and a chord doesnt have to go through the center. a diameter is considered a chord.
What is a segment that has both endpoints on the circle called?
It's called a "chord" of the circle. If it happens to go through the center of the circle,then it's also called a "diameter" of the circle, and no other chord in the same circlecan be longer.
How is a diameter a chord and a chord not a diameter?
Every chord is a line on the inside between two points on the circle. A diameter does that, so it's a chord. But in order to be a diameter, a chord also has to meet another requirement ... it has to go through the center of the circle. A lot of chords don't do that, so they can't be diameters.
What name is given to a line segment with endpoints on the circle?
The name is "chord".If the line segment happens to go through the center of the circle, thenit is also given the additional name "diameter", and no other chord in thesame circle can be longer than that one is.
What is a line through a circle that does not go through the center?
A line through a circle that does not go through the center of the circle is a secant line. A line through a circle that does go through the center is still a secant line, by the way. Compare this to a line segment that has its two endpoints on the circumference of the circle. That line segment is a cord of the circle. If that cord of the circle passes through the center of the circle, then the cord is a diameter of that circle.
Is a chord or a diamater longer?
In a circle, there are 1 or more chords, and only always 1 diameter. The diameter goes through the middle point in a circle and connects 2 points on a circle. A chord does not have to go through the middle, but can. The diameter always counts as a chord. So, either, both the chord and diameter are the same length, or the chord is shorter. I hope this answers your question! (:
Do all chords go through the origin of a circle?
No. The only chords that go through the center is a diameter.
How do you divide a circle into three parts?
I assume that you want to divide it into three equal "pie slices".If you have the location of the center of the circle, and are allowed to use a protractor (or other angle-measuring device), then you draw a radial line segment from the center to the circle, then another radial line segment at a 120° and to the first radial line segment, and final radial line segment at a further 120° angle.If you have only the circle, a straight-edge, and a compass, then you must first locate the center of the circle. Draw two cords, Use the compass to construct bisecting perpendicular lines for each chord. These bisecting perpendicular lines will meet at the center of the circle.If you now draw a chord equal in length to the radius, and radial lines from each of its ends, then that gives you a "pie slice" that is one sixth of the circle! So if you draw a second chord where the first ends, you have a "pie slice" that is one third of the circle.So you could draw five chord, each the length of the radius, each starting where the previous ended, and draw radial lines through every second chord-end. Or you could use the first two chords to find the length of a chord which corresponded to a third of the circle.(Actually, you don't really have to draw any of these chords, you just need to mark their end-points as you go along.)
How many lines of symmetry does a water melon have?
It depends on the shape of the water melon, round, oval, etc. If it was oval there would probably only be 2 lines of symmetry - top to bottom and left to right. You can't go diagonal because it wouldn't be even. A circle has an infinite number of lines of symmetry. Any chord of the circle that passes through its center will be line of symmetry. And there are an infinite number of lines that can be drawn through the center of the circle. So if the water melon was a circle it would have an infinite amount of symmetry lines. Hope it helps!! :)
Does a diameter go all the way across or halfway across a circle?
A diameter goes all the way across a circle through the center. A radius goes half way across, from the center to any point on the circle. So a circle's diameter is two times its radius.All the way through the centre of the circle but the radius only goes half way from the centre of the circle
How do you find radius if you know the chord?
well,first the radius is half of the chord. Radius is the distance from the circle centre to the chord end. The chord is the line joining the ends of the arc. Draw this line. Call the distance from the arc of the circle at its deepest point to the mid point of the chord "c". If extended, this line will go throught the centre of the circle. Call half the length of the chord "y". Then the properties of circles and chords is that c(d-c)=y2 where d is the circle diameter, so that d = y2/c + c. And then radius is half that.
How do you calculate the radius of a circle which has a 40cm chord and the height to the edge of the circle from the middle of the chord is 5cm?
Before you go off and start calculating, draw the picture, and label the lengths ofthe things you know.-- Draw the 40-cm chord.-- Draw the radius through the middle of the chord, so that you can label thelittle 5-cm piece that sticks out between the chord and the inside of the circle.Notice that the length of the other piece of the radius is (radius - 5) cm.-- Draw another radius, from the center to one end of the chord.-- Notice that you now have a right triangle inside the circle.. . . One leg is 20-cm ... (half of the chord).. . . One leg is (radius - 5) cm.. . . The hypotenuse is a radius of the circle.Now you must must phone up Pythagoras and see whether he's available tocome over and help you, especially if you don't remember that(Leg #1)2 + (Leg #2)2 = (Hypotenuse)2 .
