Suppose the original radius and area were A and r
Then A = pi*r2
New area, B = pi*(r*1.40)2 = pi*1.96*r2
So percentage change in area = 100*(B-A)/A = 100*(B/A-1) = 100*(1.96-1) = 96%
Increase the length of the radius
Area = pi r2 A = pi(r+20%)2 ----->INCREASED AREA A = pi(r+0.2) 2 A = pi(r2+0.4r+0.04) = pir2 + 0.4pir+ 0.04pi But the Area of the circle is pir2, so subtract the original area from the increased area! pir2+0.4pir+ 0.04pi - pir2 0.4pir + 0.04pi-----------ANSWER % ORpi(0.4r+0.04) pi = 3.142 but we do not know the value of radius. If is a unit circle we can give acurate %
300. (Doubling the radius multiplies the area by four times.)
The radius of the circle.
It is increased nine fold. New Area = 9*old area.
area goes as radius squared 1.1 x 1.1 = 1.21 or 21%
The circumference is directly proportional to the radius. So increasing the radius by 50% causes the circumference to also increase by 50%.
The area is increased by 300%.
To increase the area of a circle you must increase the radius.
Increase the radius sqrt(1.5) = 1.2247 times.
Increase or decrease the circle's diameter
50 percent of diameter of a circle is the radius.
there is no constant that will calculate this, since circumference is calculated with only radius and area with radius squared. you will have to calculate the radius using the initial circumference and then the radius again for the new circumference (with the 50 added). then calculate an area for each radius..then you can see the increase.
Increase the length of the radius
the area of the circle is increased by 400%
((x*1.2)^2*pi-x^2*pi)/(x^2*pi)=0.44where X is the old radius((the new area - the old area) divided with the old area)The area increases with 44%
If you triple the radius of a circle, the area will increase by 9. Area is proportional to the square of the radius.