SOLUTION: A circle of radius 12 inches has its radius decreased by 8 inches. By what percentage has its area been decreased?

Algebra.Com
Question 316480: A circle of radius 12 inches has its radius decreased by 8 inches. By what percentage has its area been decreased?
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
The area of a circle is,

.
.
.



.
.
.
55.6% decrease in area.
RELATED QUESTIONS

If a circle with a radius of 10 has its radius decreased by 2 , by what percent is the... (answered by Alan3354,nerdybill)
When the radius of a circle is increased by two inches, its area is increased by 24 pi... (answered by rothauserc)
If the radius of a circle is decreased by 40% , by what percent is the area decreased... (answered by Alan3354)
If the radius of a circle is decreased by 10%,by what percent is it's area... (answered by addingup)
a circle has a radius of 8 find its... (answered by algebrahouse.com)
The circumference of a circle is given by the formula C = 2лr, where r represents... (answered by choudhury@)
the area of a circke varies directly as the square of its radius. a circle of radius 5... (answered by ikdeep)
The area of a circle with radius r is given by the formula A=πr^2. If a circle has... (answered by math_helper)
a cicle has an area of 79 square inches. what is its radius (answered by Fombitz)