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Is there only two radius's in a circle?
Technically there are an infinite number of radii in a circle. A radius is a line from the center of the circle to a point on its edge, and since there are an infinite number of points on a circle's edge there are an infinite number of radii.
Can the radius of a circle be a decimal number?
Yes, the radius of a circle can be a decimal number. The radius is the distance from the center of the circle to any point on its circumference, and this distance can be measured in decimal form. In fact, many real-world measurements result in decimal values for the radius of a circle.
What is the number of square units occupied by the circle?
That would depend on its radius because the area of a circle is pi times radius squared
What has an infinite number of points?
The radius of a circle or a sphere has infinite number of points.
Which term describe the distance from the center of a circle to any point on the circle?
The distance from the center of a circle to any point on the circle is called the radius of the circle. The radius is a line segment that starts at the center of the circle and ends at any point on the circle. It is always a straight line and is always perpendicular to the circumference of the circle. The radius is half the diameter of the circle, which is the distance across the circle through the center. The diameter of a circle is always twice the length of the radius. My recommendation ʜᴛᴛᴘꜱ://ᴡᴡᴡ.ᴅɪɢɪꜱᴛᴏʀᴇ24.ᴄᴏᴍ/ʀᴇᴅɪʀ/372576/ꜱᴀɪᴋɪʀᴀɴ21ᴍ/
Can a circle with an irrational radius have a rational area?
Maybe
Is a radius of a circle that has 0.75 centimeters irrational or rational?
If 0.75 is the radius, that's rational. If 0.75 is the diameter, the radius is also rational: multiplying two rational numbers together always gives you a rational number.
Is the radius of a circle is irrational would the area must be irrational?
Yes and the area of any circle is an irrational number because its area is pi*radius squared whereas pi is an irrational number.
Does percents are rational or irrational?
It depends on the percentage. A 1 cm arc of a circle whose radius is 1 cm will represent 100*1/(2pi) % = 50/pi % and that is an irrational percentage. A semicircular arc of the same circle will represent 50%, which is rational.
Where are some places you can find irrational numbers?
Almost anywhere in geometry. If a circle has an rational radius, its circumference and area will be irrational. Conversely, if the area is rational then the radius will be irrational. The ratio of the diagonal of a square to its side is always sqrt(2) - an irrational. So if the sides are of rational length then the diagonal is irrational. There are lots of other common objects where the fact that some of the measures are rational forces other measures to be irrational. And circles and squares are all around you. Your glass / coffee mug is probably circular. Your plates, bowls etc. The ratio of the length to width of standard paper (A4) is irrational.
What is the relationship between the radius of a circle and its area?
area = pi*r2 where pi is the irrational number approximated by 3.14159
What is the circumference of a circle with the radius of 9?
The circumference of a circle is the radius times 2 times the irrational number "pi", which is approximately 3.14159. "Irrational" means that the number cannot be calculated as a ratio or fraction, and that the sequence of decimal places never repeats. So, the circumference of a circle of radius 9 is 56.55. If you had said that the radius of the circle was 9.0, we could reasonably calculate this to another couple of decimal places, but since the original number wasn't specified to 2 digits of precision, it's not reasonable to try to be more precise in the calculation.
How do you find the circumference of a circle when the raduis is a fraction?
The circumference is 2*pi*radius (not raduis) and this formula is applicable whether the radius is an integer, a fraction, or even an irrational number.
Is 1.7 the radius of a circle?
1.7 is a fine number. It can be the radius of a circle.Any number can be the radius of a circle.
Why did they name this irrational number pi?
Because it is the ratio of the perimeter of a circle to its radius. pi is the Greek letter which is the first letter for perimeter.
What happens to the circumference of a circle if you triple the radius?
Since circumference is proportional to the diameter (the proportionality is the definition of the irrational number pi) and the radius is just twice the diameter, if you triple the radius, you also triple the circumference.
How do you get circumfrence of a circle?
The circumference of a circle can be found by multiplying its diameter (the distance from one point on the circle to its opposite point) by the irrational number pi. The value of pi is about 3.14, but it has an infinite number of nonrepeating digits. The circumference can also be expressed as 2(pi)r, where r is the radius. The radius is the distance from the center of the circle to any point on the circle. It is equal to half of the radius.
