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The 'r' means the radius, exactly half of the diameter.
Find the centrepoint of the circle, then draw a line from the centre to the outside. This line is your radius.
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I have 65 square feet of pavers What diameter circle will this make?
3.14 x (r x r) 9 foot diameter circle
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 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.
How do you make the circle-R tradmark symbol show up?
Alt + 0174 = ®
What does r in the circle mean?
R = Radius The radius is half the diameter of a circle.
Help with math how do you get the area of a circle?
Area of a circle is calculated by A=2*p*r where A represents the circle's area and r is the radius of the circle.
How do you find the area of a half circle?
Make it a whole circle. Find the area. Divide by two.
How do you get the square foot of a circle?
You want the area of a circle, which is pi*r2 Just make sure your radius (r) is in feet and you answer will be square feet.
What is r for the formula for the area of a circle?
Area of a circle = pi R2 'R' is the length of the radius of the circle. That's the distance from the center of the circle to any point on the circle.
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
