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How do you find the director circle of circle?
The director circle of a circle with radius r is a concentric circle with radius r*sqrt(2).
What are the angles of a regular 4 pointed star?
As far as I know, there is no "regular" 4 pointed star. However, if you have a 4 pointed star, you can draw a circle through it's inner points and a second circle around its outer points. If we say that the inner circle has radius "r" and the outer circle has radius "R", that the angle, "a", of the star's points are: a = atan(2r / (R√2 - r) If the outer circle is twice as big as the inner circle, this becomes: a = atan(2r / (2r√2 - r) = atan(2 / (2√2-1) = 47.5°
What is the approximate circumference of circle r?
Circumference of a circle with radius 'r' = 2(PI)(r) ~ 6.28(r)
If the radius of a circle is r what is the diameter of the circle?
The radius of a circle is half the diameter so if the radius of a circle is r, then the diameter is 2r.
What is a circle with a little circle in it called?
An annulus. Area = pi (R2 - r2) when R is radius of larger circle and r is radius of smaller circle.
What places start with R?
a place that starts with r when you are going somewhere is a restaurant
What is a restaurant that starts with r?
Rainbow Room (New York City) Ryan's Roseland
What animal has big ears and starts with r?
rabbit
What restaurant names starts with an r?
Ruth's Chris Steak House, Ruby Tuesday and Rainforest Café are restaurants. They start with the letter r.
The area of one circle is four times as large as a smaller circle with a radius of 3 inches The radius of the larger circle is?
R = radius of big circle, r = radius of little circle Area of circle = pi x R x R = 4 x pi x r x r = 4 x pi x 3 x 3 Therefore R x R = 36 and so R = 6 inches
What happens to the area of a circle when the radius is tripled?
The area of the circle becomes 9 times the area of the original circle. Original circle = Pi * (r ^ 2) = Pi * r * r New Circle = Pi * ((3 * r) ^ 2) = Pi * 9 * r * r
How do you find the director circle of circle?
The director circle of a circle with radius r is a concentric circle with radius r*sqrt(2).
What are the angles of a regular 4 pointed star?
As far as I know, there is no "regular" 4 pointed star. However, if you have a 4 pointed star, you can draw a circle through it's inner points and a second circle around its outer points. If we say that the inner circle has radius "r" and the outer circle has radius "R", that the angle, "a", of the star's points are: a = atan(2r / (R√2 - r) If the outer circle is twice as big as the inner circle, this becomes: a = atan(2r / (2r√2 - r) = atan(2 / (2√2-1) = 47.5°
What is the approximate circumference of circle r?
Circumference of a circle with radius 'r' = 2(PI)(r) ~ 6.28(r)
What is the name of a restaurant starting with a r?
Razzoo's. (a cajun restaurant)
If the radius of a circle is r what is the diameter of the circle?
The radius of a circle is half the diameter so if the radius of a circle is r, then the diameter is 2r.
What does r in the circle mean?
R = Radius The radius is half the diameter of a circle.
