2007-05-29 02:59:23 · 18 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
A = pi * r * r
:)
2007-05-29 03:16:26 · answer #1 · answered by A confused bio student 2 · 0⤊ 0⤋
The area of a circle is found using the formula: pi r^2
pi = 3.14 inches
r = the radius in inches
solution. Multiply the radius times itself and then multiply that by 3.14. All units in inches and you will have the area of the circle in square inches.
2007-05-29 10:04:07 · answer #2 · answered by khorat k 6 · 0⤊ 1⤋
If you know the diameter or the radius, it is easy. If r is the radius of the circle, the area is pi multiplied by square of the radius r.
A = pi. r^2 where pi = 3.1416...or 22/7 (approx).
If you don't know the radius of the circle, it is difficult, but there are some graphical methods.
2007-05-29 10:04:58 · answer #3 · answered by Swamy 7 · 0⤊ 1⤋
A=pi*r^2
2007-05-29 10:05:43 · answer #4 · answered by Anonymous · 0⤊ 1⤋
Area of a circle equals pie times r squared
Hope that helps! :-)
2007-05-29 10:10:01 · answer #5 · answered by Anonymous · 0⤊ 1⤋
22/7 * radius * radius = area of circle
2007-05-29 10:06:59 · answer #6 · answered by crispy_corn 2 · 0⤊ 1⤋
Area of circle = pi * radius * radius
2007-05-29 10:01:52 · answer #7 · answered by Doctor Q 6 · 0⤊ 2⤋
I think the formula is pi times the radius squared. A equals pi r squared, that is if you know how to write that.
2007-05-29 10:03:38 · answer #8 · answered by Mary D 3 · 0⤊ 1⤋
a=pi x radius squared
2007-05-29 10:09:53 · answer #9 · answered by clown 2 · 0⤊ 1⤋
A=Pie r squared
pie is usually 3.14
2007-05-29 11:54:35 · answer #10 · answered by Jo M. 2 · 0⤊ 1⤋
pi r squared, ok first take the raduis or halfof the diameter and mulitply it by itself, then take that some and times it by pi (3.14) that your answer!!!:)
2007-05-29 10:02:51 · answer #11 · answered by Anonymous · 0⤊ 1⤋