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If you double the area of a circle how much do you need to increase the radius?
Wiki User
∙ 14y ago
To double the area of a circle, you need to increase the radius by a factor equal to the square root of 2, or by about 1.414.
Recall the formula for the area of a circle is 2 pi r2. Well, 2 pi is constant, so look at r2. In order to double the contribution of r2 you need to increase r by a factor equal to the square root of 2.
Wiki User
∙ 14y ago
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If you double the radius of a circle what happens to the area?
If you double the original radius, the area will become 4 times what it was. The area of a circle is pi*r^2 = A. If our new radius (lets say x) is double (x=2r), we have pi*x^2 = pi*(2r)^2, which equals 4*pi*r^2 = 4A, or 4 times the original area.
If the radius of a circle is doubled what happens to the area?
It quadruples. The area of a circle is Pi (about 3.14159) times the radius squared. So if you double the radius (say from 2m to 4m), you area will change from 4*Pi to 16*Pi (4 times what it was originally).
What is the area of a circle if the radius is 9m?
The area of a circle if the radius is 9m 254.5m2
What is the radius of a circle with the area of 36?
The radius of a circle with the area of 36 is 3.385
What is the area of a circle of the radius of 10m?
A circle with a radius of 10m has an area of 314.16 m2
How can you change the radius of the circle to increase the area?
To increase the area of a circle you must increase the radius.
What happen to the area of circle when the radius is tripled?
If you triple the radius of a circle, the area will increase by 9. Area is proportional to the square of the radius.
What happens to the area of a circle if yo double the radius?
Nothing - if you double the radius you will get the diameter. The area of the circle will remain the same
What happens to the area of a circle when you triple the radius?
As the area of a circle is pi*radius2 the increase in area is a factor of 32. So tripling the radius gives an increase in area by a factor of 9.
What happens to the area of a circle if you double the original radius?
the area doubles. for example: the radius is 2. so the area is 4pi. then double the original radius of 2 to 4 and the area is 8pi. 8pi is double 4pi.
How many times bigger than the 5 circle in the 10 circle?
if you double the radius (or diameter) , you get four times the area. area of a circle = pi * radius squared
What happens to the area of a circle when the radius is triple?
The area increases as the square of the radius (or diameter). So if you double the radius you * 4 (quadruple) the area. Treble the radius, you *9 the area.
What is the diameter of a circle when the area of the circle is 254.34?
Divide the area by Pi. Take the square root of the result. This is the radius. Now double the radius to get the diameter. -> Answer = 18
What happens to the area of a circle when the radius is doubled tripled?
The area increases as the square of the radius (or diameter). So if you double the radius you * 4 (quadruple) the area. Treble the radius, you *9 the area.
The radius of a circle is multiplied by 7 Its area is times bigger than the original circle?
The relationship between a circle's radius and it's area is: a = πr2 so if the radius of the circle increases by 7 times, the area will increase by π72 times, or 49π, which is approximately equal to 153.938
Find diameter of the circle in java program?
public class CircleDiameter { publicCircleDiameter() { super(); } publicfloatgetDiameterFrmRadius(float radius){ return radius * 2; } /** * @param args */ public static void main(String[] args) { float radius = 5; CircleDiameter circle = newCircleDiameter(); float dia = circle.getDiameterFrmRadius(radius); System.out.println("Diameter of this circle is: " + dia); } }
What happens to the area of a circle if you double the radius?
Since the area of a circle is S=πr2 and we intend to double the radius(2r) then the area of the new circle will be S'=π*(2r)2=4*πr2, an area 4 times greater than the initial one S'=4S.
