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the circumference would be 18.84,the area would be 28.26 pi=3.14

Q: If you have a radius of three centimeters and you draw a circle around it what is the answer?

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If you triple the radius of a circle . . . -- You should not expect anything to happen. Those around are likely to remain completely unaware that you have done anything to your circle. -- You wind up with a circle that's three times as big as it used to be. -- The diameter of the circle is three times the original diameter. -- The circumference of the circle is three times the original circumference. -- The area of the circle is nine times the original area.

a circle with three radius lines

d = 2r, where d is diameter and r is radius.

Its circumference Its diameter Its radius

The area of a circle with radius 5 is 25 pi. Concentric circles with radius 3 and 4 have areas of 9 pi and 16 pi. The concentric circle with radius four consumes the circle with radius 3. 25 pi minus 16 pi leaves 9 pi of the circle with radius 5 left over. 16 pi is slightly over three-fifths of the circle with radius 5.

Related questions

The locus of points (or collection of all points) that are 10 centimeters from a given point would be a circle (of radius 10 cm) in two dimensions, and a sphere (of radius 10 cm) in three dimensions.

28.27

If you triple the radius of a circle . . . -- You should not expect anything to happen. Those around are likely to remain completely unaware that you have done anything to your circle. -- You wind up with a circle that's three times as big as it used to be. -- The diameter of the circle is three times the original diameter. -- The circumference of the circle is three times the original circumference. -- The area of the circle is nine times the original area.

a circle with three radius lines

Three inches.

d = 2r, where d is diameter and r is radius.

Its circumference Its diameter Its radius

Each circle with a different radius (or diameter or circumference) is a different size circle.

Six (d = r * 2)

The area of a circle with radius 5 is 25 pi. Concentric circles with radius 3 and 4 have areas of 9 pi and 16 pi. The concentric circle with radius four consumes the circle with radius 3. 25 pi minus 16 pi leaves 9 pi of the circle with radius 5 left over. 16 pi is slightly over three-fifths of the circle with radius 5.

The biggest chord is the diameter which is radius*2 and so three quarters of an inch.

circumference of a circle = diameter*pi or 2*pi*radius