0
The radius of a circle has increased by 20 percent By what percentage does the area increase?
Wiki User
∙ 14y ago
((x*1.2)^2*pi-x^2*pi)/(x^2*pi)=0.44
where X is the old radius
((the new area - the old area) divided with the old area)
The area increases with 44%
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
If a radius of a circle is increased by 10 percent by what percent does its area increase?
area goes as radius squared 1.1 x 1.1 = 1.21 or 21%
What happens to the circumference of a circle when the radius is increased by 50 percent?
The circumference is directly proportional to the radius. So increasing the radius by 50% causes the circumference to also increase by 50%.
How do you take a circle and enlarge it by 150 percent?
Increase the radius sqrt(1.5) = 1.2247 times.
If radius of a circle increased from 5cm to 5.1cm find the approximate increase in area?
Area of circle: pi*5^2 = 78.53981634 square cm Area of circle: pi*5.1^2 = 81.71282492 square cm
What is the percentage of one sixth of a circle?
One sixth is equal to (16 2/3) percent or 16.6666....percent.
If a radius of a circle is increased by 10 percent by what percent does its area increase?
area goes as radius squared 1.1 x 1.1 = 1.21 or 21%
What happens to the area of a circle of its radius is increased by100 percent?
The area is increased by 300%.
What percentage of diameter of a circle is the radius?
50 percent of diameter of a circle is the radius.
What happens to the circumference of a circle when the radius is increased by 50 percent?
The circumference is directly proportional to the radius. So increasing the radius by 50% causes the circumference to also increase by 50%.
How do you find the percentage of a circle?
This question is unanswerable because it is not specified what is that is being taken as a percent of a circle.
What is 36 degrees in a percent?
That depends what it is a percentage of. Assuming it is a percentage of a full circle, it is equal to 36/360 x 100 = 10 percent.
If radius is increased by 40 percent what will be the increase in area of that circle?
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%
What is 45 percent of a circle?
you need to quote the circumference to calculate the length of the arc or its percentage
What is 120 degrees in a percentage?
120 degrees is 33 and 1/3 percent of a circle.
How would you calculate the angle to show twenty percent on a circle graph?
Multiply the percentage by 3.6
Three fifths of a circle is what percent of a circle?
To convert a fraction to a percentage, do the division, and multiply by hundred - in this case, (3 / 5) x 100.
How do you take a circle and enlarge it by 150 percent?
Increase the radius sqrt(1.5) = 1.2247 times.
