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The ratio of radius to diameter for any circle is 1/2
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∙ 12y ago
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Do all circles have a diameter?
yes
What is the retationship between the circumference and the diameter?
What is the relationship between the circumference and the diameter? Answer The circumference divided by pi gives the diameter. d = C / pi An alternate way to express the above answer. For all circles, pi is the ratio of the circumference to the diameter pi = C / d
Are all circles similar?
Yes, all circles are similer, they all have 1 line, all the same shape, any quarter of a circle will always be 25%, but it the line is bigger they still have differances and similarities, e.g a circle can have a radius of 25cm while another can have a radius of 93984389569349billion miles
Why is half the diameter the radius?
A radius is a straight line from the circumference (boundary) of a circle to the centre. A diameter is a straight line that goes from the circumference to the centre and then continues until it reaches the circumference of the other side. In a circle, all points on the circumference are the same distance from the centre. As a result, the second part of the diameter is the same as the first. In other words, diameter = radius + radius = 2*radius.
What is the radius if the dianeter is 40cm?
The Diameter is the distance from one side of the circle all the way to the other side. The Radius is half the distance in a circle. Simply put: 40cm = Diameter 20cm = Radius (Half the distance) :)
The diameter of a big circle is 42 feet what is the ratio of the circle's radius to it's diameter?
Radius = 1/2 of diameter.The ratio is 1/2 = 0.5.That's true for all circles, from microscopic to humongous, doesn't matter.
Is the ratio of circumference to the diameter of all circles always the same?
Yes
What did early civilizations notice about the ratio of circumference to diameter?
They noticed circumference/diameter was a constant ratio applicable to all circles no matter whattheir sizes were
What is pi radius and diameter?
The radius of a circle is the distance from the center to any point on the circle. The diameter is twice as much; it is the length of a line segment from one point on a circle to another point on it that passes through the center. Pi is a constant, equal to approximately 3.1416 (the exact value is irrational), which is defined as the ratio of the circumference of any circle to its diameter (all circles are similar so the ratio is always the same).
Do concentric circles have the same circles?
No. You can only define a circle by radius, diameter, area, perimeter. Concentric circles have the same centre, therefore, if they were the same circles with the same radius, then they would all lie on top of each other and be effectively one circle.
What is the relationship between circumference and pi?
In any circle, the product of pi and the diameter will be the circumference. That is because pi is the ratio of the diameter of a circle to its circumference. Here is the equation: c = pi x d
Which is more diameter or radius?
The diameter. The diameter is all the way across the circle, the radius is half of the diameter
Do all circles have a diameter?
yes
How do you find the radius in a circle when all you have is the diameter.?
The diameter is equal to half of the radius. So take the value of the diameter and divide it by two and that is your radius.
If the diameter of a circle is dilated by a scale factor of 0.6 what will be the effect on the circles circumference?
All linear dimensions (radius, diameter, circumference, an arc that covers a certain angle, etc.) will scale by the same factor.
What is the retationship between the circumference and the diameter?
What is the relationship between the circumference and the diameter? Answer The circumference divided by pi gives the diameter. d = C / pi An alternate way to express the above answer. For all circles, pi is the ratio of the circumference to the diameter pi = C / d
Why is the diameter of a circle always twice the length of the radius?
True. The diameter of a circle is always twice the length of the radius. In other words, if we denote the radius of a circle as "r," then the diameter can be expressed as "2r." This relationship holds true for all circles, regardless of their size.
